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Dictionary M

TermExplanation
M.MMercantile marine. A merchant navy or merchant marine or mercantile marine[1] is the fleet of merchant vessels that are registered in a specific country.
M/RMate’s Receipt , Document signed by an officer of a vessel evidencing receipt of a shipment onboard the vessel. It is not a document of title and is issued as an interim measure until a proper bill of lading can be issued.
M/TMetric tons (2,250 lbs.).
Machine centreA work centre composed of a set of machines that process a common group of products and is considered as a single resource for routing definition and capacity planning
Machine downtimesTime during which a machine cannot be utilised. Machine downtimes may occur during breakdowns, maintenance, changeovers, etc.
Machine hoursThe actual time recorded by a machine when used for production, and used in efficiency and utilisation calculations.
Machine load reportA report of demand for a given machine or machine centre by production orders released to the floor that normally compares load and capacity in terms of hours or units, and identifies the orders creating the demand.
Machine utilisationThe measure of machine hours recorded against production vs. the hours available or scheduled for a given period
Machine visionSystems that use video cameras, robots or other devices, and computers to visually analyse an operation or activity. Typical uses include automated inspection, optical character recognition and other non-contact applications.
Machine-to-machine interface (M2M)A term describing the process whereby machines are remotely monitored for status and problems reported and resolved automatically or maintenance scheduled by the monitoring systems.
Macro (Macroscopic)A word commonly used to describe physical objects that are measurable and observable by the naked eye.
Macro environmentThe environment external to a business including technological, economic, natural, and regulatory forces that marketing efforts cannot control.
Macro planA high-level project or other plan that identifies only major milestones and dates and does not include detailed tasks and activities.
MafiA generic term for a wheeled trailer used for carrying cargo, also properly known as a roll trailer. It may remain on board throughout ocean passage or be used as a ‘slave’ trailer to transport cargo to and from the vessel once on quay.
Magnetic belt conveyorA steel belt and either a magnetic slider bed or magnetic pulley is used to transport ferrous materials vertically, upside down, and around corners.
Magnetic placardPlacard system made of magnetic material and used on metal racks and other metal surfaces.
MainframeA term sometimes generically used to refer to an organisation’s central computer system. Specifically the largest class of computer systems manufactured.
Maintenance allocation chart (MAC)A chart format, prepared and placed in appropriate equipment technical manuals, indicating maintenance operations applicable to an end item, component, assembly, or module, and which prescribes the maintenance categories authorised to accomplish specific maintenance operations.
Maintenance Assistance and Instruction Team(MAIT)This program provides a means whereby technical expertise can be furnished individual unit commanders to help them identify and solve equipment maintenance problems that are contributing to the inability of their units to meet materiel readiness standards.
Maintenance conceptA concept which describes the manner in which an end item will be maintained and supported. It indicates maintenance capabilities required of the using unit and supporting units, and provides information concerning tactical employment; usually maintenance environment, mobility consideration, allowable downtime, and other operational considerations. Additionally, the technical information required to develop military and civilian occupational series codes to recognise new or changed skill requirements is included
Maintenance costsThe costs incurred to support and ensure continued availability of an asset, such as scheduled and unscheduled repairs and support staff. In software agreements the annual fees paid to the vendor that allows ongoing use of the system.
Maintenance diagnosticsA process by which the frequency, amount and cost of maintenance to buildings and machines is evaluated on an on-going basis. Such a process ensures that the buildings and machines at a facility are being maintained at the correct levels in the most efficient and cost effective manner possible. Software programs designed specifically for this purpose are available.
Maintenance expenditure limitThe maximum expenditure permitted for one-time repair of an item at organisational, direct, general, or depot categories of maintenance. It includes the cost of repair parts and labour service. Unserviceable items with repair cost exceeding the maintenance expenditure limits are classified as uneconomically repairable.
Maintenance floatEnd items of equipment authorised for stockage at installations or activities for replacement of unserviceable items of equipment when timely repair of the unserviceable equipment cannot be accomplished by the support maintenance activity. Maintenance float includes both operational readiness float and repair cycle float.
Maintenance repair and operating inventoryInventory used to maintain equipment as well as miscellaneous supplies such as office cleaning supplies.
Maintenance shop stockLow value expendable items and repair parts which have a high consumption rate at general and direct support maintenance activities in support maintenance activities in support of the assigned maintenance missions. These stocks are in addition to shop supplies.
Maintenance support planA continually updated plan initiated at the beginning of the procurement phase for a commercial item. The plan provides narrative data concerning the planned use of the item, and establishes a time- phased schedule of the major actions required to determine and insure timely availability of all elements required for maintenance support of the item.
Major assemblyA self-contained unit of individual identity. A completed assembly of component parts ready for operation, but utilised as a portion of, and intended for, further installation in an end item or major item.
Major carrierA for-hire certificated air carrier that has annual operating revenues of $1 billion or more: the carrier usually operates between major population centres.
Major componentA combination of subassemblies, assemblies, components, modules, and parts connected in such a manner as to be a self-contained unit that, although part of an end item, is capable of operating independently of the end item. Major assemblies are separately identified by type, model and series and assigned item ID numbers (SB 700-20). Examples are receivers or receiver-transmitters in radio sets and machine guns or other weapons in secondary, armament subsystems of combat vehicles
Major itemFinal combination of component parts or materials that is ready for its intended use. It is important enough to be subject to continuing, centralised, individual item authorisation and management throughout all command support echelons.
Major item requisition validation (MIRV)A wholesale supply source program (CCSS) which provides the major item manager with a method of maintaining valid backordered requisitions in release sequence under the proper line item number (LIN). This system provides automated support for major item requisitioning under MILSTRIP and supports the functions of materiel managers at the commodity commands.
Major repairRepair work on items of materiel or equipment that need complete overhaul or substantial replacement of parts, or that requires special tools
Make to orderA manufacturing process strategy where the trigger to begin manufacture of a product is an actual customer order or release, rather than a market forecast. For Make-to-Order products, more than 20% of the value-added takes place after the receipt of the order or release, and all necessary design and process documentation is available at time of order receipt.
Make to stockA manufacturing method in which finished goods are produced and stocked prior to receipt of a customer order. It uses a forecast based on past demand history to initiate production of end items when inventory has fallen below desired levels, instead of waiting until a final quantity and configuration is described on a customer order.
Make/buy analysisThe process that analyses tradeoffs in costs and benefits between internal productions of a given item vs. purchasing it from a vendor. It includes identification of true product costs, the impact of fixed overhead, facility capacity considerations, vendor capability and stability and other factors.
Make-or-buy decisionThe act of deciding whether to produce an item internally or buy it from an outside supplier. Factors to consider in the decision include costs, capacity availability, proprietary and/or specialised knowledge, quality considerations, skill requirements, volume, and timing.
MalfunctionA failure or state of operation outside of specified parameters.
MalpracticeThe act or an instance of improper practice.
ManagementThe act, art, or manner of managing, or handling, controlling, directing, etc
Management control numberA number, similar to a Federal Stock Number, assigned by the National Inventory Control Points under certain specific conditions for identification and accounting purposes. Consists of applicable four-digit class code number from the Federal Supply Classification, plus a letter to designate the assigning agency, followed by a six-digit number
Management levelAn acceptable range of performance usually expressed with upper and lower control units, or occasionally as a single figure. Performance inconsistent with a management level will be cause for the operation to receive closer management
Mandatory parts listA published list of spare/repair parts that must be stocked to support a specific system.
Man-hourThe period of time measured by a single person working for one hour. Standard man-hours specify the amount of time normally expected to be used in a process or operation, based on estimation or past history.
ManifestA list of cargo or passengers carried on a ship or plane. An invoice of goods carried on a truck or train. A list of railroad cars according to owner and location.
ManifestingThe act of creating a statement which describes and/or lists the load on a vehicle in transit.
ManipulatorA stationary (does not mean that nothing moves) movement assist device that is often equipped with end effectors for handling different types of loads. End effectors include all forms of grippers, forks, barrel grabs, etc. Manipulators counteract the weight of the load, rendering it almost weightless by way of hydraulic or pneumatic cylinders, or simply by way of counter weights and the exercising of very limited manual control. Most manipulators require manual actuation and control and are therefore manual assist devices. They are mounted to the floor, wall or ceiling. In some cases, manipulators are mounted to a fixed base plate and the entire unit can be moved via a trolley, cart or fork lift truck.
Manuala. Made, done, worked, or used by the hands
Manual handlingThe handling of materials by hand or by using devices that are non-powered.
Manual hoistA suspended machinery unit that, by use of manual operation, is used for lifting and lowering of a freely suspended (unguided) load. Generally uses chain (roller or link) as its lifting medium.
Manual rescheduleTo change the expected date of an open production, purchase or interplant order by a planner or other person, based on a suggestion from MRP or other information. It requires a review process that evaluates the effect of moving the initial date, and increases reaction time while allowing for more control than a process in which MRP or other system suggestions for reschedules are automatically performed.
Manually handled containerContainers designed to be handled by hand and not by machine.
Manufacture cycle timeThe average time between commencement and completion of a manufacturing process, as it applies to make-to-stock products. Calculation: [Average # of units in WIP] / [Average daily output in units]
ManufacturabilityThe characteristics considered in the design cycle that focus on process capabilities, machine or facility flexibility, and the overall ability to consistently produce at the required quality level instead of product elegance.
Manufacturer’s representativeOne who sells goods for several firms but does not take title to them.
ManufacturingManufacturing is the use of machines, tools and labour to make things for use or sale. The term may refer to a range of human activity, from handicraft to high tech, but is most commonly applied to industrial production, in which raw materials are transformed into finished goods on a large scale. Such finished goods may be used for manufacturing other, more complex products, such as household appliances or automobiles, or sold to wholesalers, who in turn sell them to retailers, who then sell them to end users , the “consumers”.
Manufacturing calendarA calendar used in inventory and production planning functions that consecutively numbers only the working days so that the component and work order scheduling may be done based on the actual number of workdays available. Synonyms: M-Day Calendar, Planning Calendar, Production Calendar, Shop Calendar.
Manufacturing capital asset valueThe asset value of the “Manufacturing fixed assets” after allowance for depreciation. Examples of equipment are SMT placement machines, conveyors, Auto guided vehicles, robot cells, testers, X-ray solder machines, Burn-in chambers, Logic testers, Auto packing equipment, PLC station controllers, Scanning equipment, PWB magazines.
Manufacturing environmentThe overall set of factors that influence planning, scheduling and strategic production decisions which include type and timing of demand, product and process complexity, physical product form, logistics and vendor capabilities, and internal functional capabilities. Describing the overall environment often includes the response to demand (to stock or to order), physical facility layout (job shop, production line, cell, batch processing or other) and methods and requirements used in planning and scheduling (discrete, repetitive or process). Many companies have characteristics of more than one environment.
Manufacturing execution systemA production scheduling and tracking system used to analyse and report resource availability and status, schedule and update orders, collect detailed execution data such as material usage, labour usage, process parameters, order and equipment status, and other critical information. It accesses bill of material, routing and other data from the base ERP system and is typically the system used for real-time shop floor reporting and monitoring that feeds activity data back to the base system.
Manufacturing instructionsThe detailed process parameters and operating data required for a specific production operation, which may include both basic production rate data and detailed engineering specifications and notes.
Manufacturing lead timeThe total time required in manufacturing an item, exclusive of lower level purchasing lead time. For make-to-order products, it is the length of time between the release of an order to the production process and shipment to the final customer. For make-to-stock products, it is the length of time between the release of an order to the production process and receipt into finished goods inventory. Included here are order preparation time, queue time, setup time, run time, move time, inspection time, and put-away time. Synonyms: Manufacturing Cycle Time. Also see: Lead Time
Manufacturing planningDefinition of the weekly or daily production and machine schedules across multiple plants or lines to meet orders and forecast demand. Some manufacturing planning modules also incorporate materials planning.
Manufacturing resource planningA fully-integrated planning and control system, providing coordination and communication among finance, marketing, and production departments. Manufacturing Resource Planning (MRP) takes into account plans from these entities and assists management in developing a production plan, which must be adjusted on a daily or weekly basis to satisfy changes in demand. Initially MRP was a list of components needed to produce a specified quantity of items as well as when and how manufacturing intends to use these components.
Manufacturing schedulingGeneration of plant-level execution schedules by product and resource (e.g., line and machine) and resolution of day-to-day capacity bottlenecks. Scheduling applications normally include a more granular level of resource information, and will provide such functionality as sequence dependent set up, tank scheduling and point-of-use material availability.
Manufacturing systemIn an ERP system, the functions and modules used to identify and plan demand and materials, analyse resource availability and requirements, and schedule, release and report production.
Man-upTerm used to describe lift trucks designed to raise the operator with the load. Order selectors and turret trucks are the most common types of man-up vehicles.
MaquiladoraA maquiladora or maquila is a factory that imports materials and equipment on a duty-free and tariff-free basis for assembly or manufacturing and then re-exports the assembled product, usually back to the originating country. A maquila is also referred to as a “twin plant”, or “in-bond” industry. It is important in Mexico because over a million people depend on them for their livelihood.
Margin exception reportingFeatures in order entry systems that compare line item prices to standard costs and flag instances that violate a predefined margin percentage.
Margin for errorAn allowance built into a system or process that provides for continued operation or a successful outcome even with less-than-perfect results.
Marginal costThe cost to produce one additional unit of output. The change in total variable cost resulting from a one-unit change in output.
Marine insuranceBroadly, insurance covering loss or damage of goods at sea. Marine insurance typically compensates the owner of merchandise for losses sustained from fire, shipwreck, etc., but excludes losses that can be recovered from the carrier.
MaritimeBusinesses pertaining to commerce or navigation transacted upon the sea or in seaports in such matters as the court of admiralty has jurisdiction.
MarkAs used on containers in foreign trade, a symbol or initials shown together with the port of importation and the final destination, if different. Marks are registered at appropriate customs houses; they also appear on bills of lading and invoices. In domestic trade, it is common to mark containers with the name and address of the recipient, but this is rarely done in foreign trade.
Market demandIn marketing, the total demand that would exist within a defined customer group in a given geographical area during a particular time period given a known marketing program.
Market dominanceIn transportation rating this refers to the absence of effective competition for railroads from other carriers and modes for the traffic to which the rate applies.
Market positioned warehouseWarehouse positioned to replenish customer inventory assortments and to afford maximum inbound transport consolidation economies from inventory origin points with relatively short-haul local delivery.
Market segmentationProcess of dividing the market according to similarities that exist among the various subgroups within the market. The similarities may be common characteristics or common needs and desires. Market segmentation comes about as a result of the observation that all potential users of a product are not alike, and that the same general appeal will not interest all prospects.
Market shareThe percent of a given market sold to or owned by a company out of the whole as a result of its success in marketing effectiveness, product characteristics, pricing, cost, delivery time, quality and many other factors. Market share is affected by the type of industry and number of competitors, and can indicate the stage of a product’s life cycle (introduction, growth, maturity, and decline).
MarketingThe act of buying or selling in a market All business activity involved in the moving of goods from the producer to the consumer, including selling, advertising, packaging, etc.
Marketing automationA subset of customer relationship management (CRM) functions that focuses on the definition, scheduling and tracking of marketing campaigns. It includes the identification of target markets, advertising delivery, budget definition, results analysis and other related activities.
Marketing campaignA specific, defined series of activities used in marketing a new or changed product or service, or in using new marketing channels and methods. Like a promotion, the future estimated effects of a new marketing campaign must be included in demand and resource planning.
Marketing MixThe marketing mix is a business tool used in marketing and by marketing professionals. The marketing mix is often crucial when determining a product or brand’s offer, and is often synonymous with the four Ps: Price, Product, Promotion, and Place; in service marketing, however, the four Ps have been expanded to the Seven Ps to address the different nature of services.
MarkingEvery article of foreign origin, or its container, imported into the United States shall be permanently marked in a conspicuous place in a manner which would indicate to the ultimate purchaser the English name of the country of origin of the article.
MarkoutWhen the item ordered shows quantity on hand, but the selector is not able to find the expected quantity.
Marquis partnersKey strategic relationships. This has emerged as perhaps the key competitive advantage and barrier to entry of e-marketplaces. Get the big players in the fold first, offering equity if necessary.
Marshaller or marshaling agentIs a service unique to international trade and relates to an individual or firm that specialises in one or more of the activities preceding Main Carriage, such as consolidation, packing, marking, sorting of merchandise, inspection, storage, etc. References state that Marshaling Agent, Consolidation Agent and Freight Forwarder all have the same meaning.
Masked outThe design of an inductive loop sensor so that certain objects are not detected.
Mass customisationThe creation of a high-volume product with large variety so that a customer may specify his or her exact model out of a large volume of possible end items while manufacturing cost is low because of the large volume. An example is a personal computer order in which the customer may specify processor speed, memory size, hard disk size and speed, removable storage device characteristics, and many other options when PCs are assembled on one line and at low cost.
Mass productionLarge volume production of the same basic product or product line based on the type and timing of demand and facility design and capabilities, which can be for either finished goods or lower level items.
Master black beltIn the six sigma quality improvement methodology, a person who teaches and mentors black belt leaders in skills training, assessment and project demonstration/review.
Master cartonUtilised as a larger uniform shipping carton for smaller packages or carton, the master carton serves to lessen material handling time and adds protection during shipping to the smaller items.
Master fileA database file, often created manually as needed, that contains static records used to identify items, customers, vendors, bills of material, work centres, etc. as opposed to files used to track the dynamic status of orders and inventory balances.
Master packA large box that is used to pack a number of smaller boxes or containers. Aids in protecting the smaller cartons or packages and reduces the number of cartons to be handled during the material handling process.
Master production scheduleIs a manufacturing plan that quantifies significant processes, parts, and other resources in order to optimise production, to identify bottlenecks, and to anticipate needs and completed goods. Since an MPS drives much factory activity, its quality dramatically affects a factory’s profitability. Typical MPS’s are created by software with significant user input and tweaking.
Master schedulingThe process of reviewing a proposed MPS, comparing to stated higher-level production plan, resource availability and management parameters, and firming it and releasing to the rest of the system. The frequency of regenerating and reviewing the MPS, typically weekly, depends on the industry, process flexibility, forecast accuracy and many other factors.
MaterialThe raw materials and purchased components used in the production of other items. The classification of any lower level item, whether purchased or manufactured. A subassembly that has material, labour and overhead content may be considered strictly as material in the context of being used in an upper level item.
Material acquisition costsOne of the elements comprising a company’s total supply-chain management costs.
Material flowThe function of maintaining a constantly available supply of materials needed for production. Such materials may include raw materials, purchased items, or assembled items. The movement of materials to, through, and from productive processes; in warehouses and storage; and in receiving and shipping areas
Material handling principlesA principle is a general rule, fundamental, or other statement of an observed truth. Over time certain fundamental truths of material handling have been found to exist. The “principles” of material handling are often useful in analyzing, planning and managing material handling activities and systems. At the very least they form a basic foundation upon which one can begin building expertise in material handling. These principles, that serve as a starting point to identifying potential problems and assessing need, are:
Material handling systemsEquipment that moves items between required locations on either a programmed (automatic) or manually-initiated basis. They sometimes perform weighing and other measurement functions, are designed specifically for the products to be handled, and include conveyors, pick and placement systems, and other dedicated equipment.
Material intensiveA product or product line that has a higher content of material and a corresponding lower level of labour when compared to other products. A material-intensive product often contains high-value components that require minimal labour or further processing to create the finished item.
Material managementThe organisational functions responsible for the planning, sourcing, stocking and logistics activities of materials used in the internal and external fulfillment of demand.
Material plannerA person whose focus is the review, release and follow-up of purchase or production orders and inventory status vs. plan, instead of detailed scheduling of production facilities.
Material requirements planningThe process that uses the MPS as demand, explodes the bill of material for specified MPS items, nets those requirements against on-hand inventory and existing open orders, and recommends placing new production and purchase orders and changes to existing orders based on parameters that consider safety stock levels, lot sizes and lead times. It is based on the idea of dependent demand (demand for an item is due to its usage in other items) and starts at the highest level in the bill of material, stopping at the first level where the quantity of inventory plus incoming receipts is adequate to meet demand and it is not necessary to send a requirement to the next lower level. While sometimes considered complex due to many levels in the bill of material or a large number of items, MRP in general is just a calculator and depends completely on the accuracy of the MPS, bills of material and order date and quantity information to be useful.
Material review boardA cross-functional group that reviews production or purchased items on hold due to usability concerns and determines their disposition, which may include rework, scrap, or returning to the vendor.
Material safety data sheetA document that is part of the materials information system and accompanies the product. Prepared by the manufacturer, the MSDS provides information regarding the safety and chemical properties and (if necessary) the long-term storage, handling, and disposal of the product. Among other factors, the MSDS describes the hazardous components of a product; how to treat leaks, spills, and fires; and how to treat improper human contact with the product. Also see: Hazardous Materials
Material usage varianceThe variance generated by using a lesser or greater actual quantity of the standard material than specified in producing a given item (which is different than a substitution variance created by using items different than the ones on the standard bill of material ).
Materials handlingThe movement of materials (raw materials, scrap, semi-finished, and finished) to, through, and from productive processes; in warehouses and storage; and in receiving and shipping areas.
Materials handling equipmentAll equipments that relate to the movement, storage, control and protection of materials, goods and products throughout the process of manufacturing, distribution, consumption and disposal. Material handling equipments are the mechanical equipment involved in the complete system. Material handling equipment is generally separated into four main categories; Storage and Handling Equipment, Engineered Systems, Industrial Trucks and Bulk Material Handling.
Materials planningThe materials management function that attempts to coordinate the supply of materials with the demand for materials.
MaterielAll items (including ships, tanks, self-propelled weapons, aircraft, etc., and related spares, repair parts, and support equipment, but excluding real property, installations, and utilities) necessary to equip, operate, maintain, and support military activities without distinction as to its application for administrative or combat purposes. See also equipment; personal property. Property necessary to equip, maintain, operate, and support military activities. May be used either for administrative or combat purposes. Materiel in the commercial distribution context comprises the items being moved by the services of or as the products of the business, as distinct from those involved in operating the business itself.
Materiel obligationThat unfilled portion of a requisition (for a stocked or nonstocked item) not immediately available for issue. It is recorded as a commitment for future issue, either by direct delivery from vendor or back ordered from stock. This includes both NSN and non-NSN items
Materiel readinessThe availability of materiel required by a military organisation to support its wartime activities or contingencies, disaster relief (flood, earthquake, etc.), or other emergencies.
Materiel release confirmationA notice from a storage site advising the preparer of a materiel release order of the positive action taken on the order
Materiel release denialA notice from a storage site advising the preparer of a materiel release order of the negative (warehouse refusal) action on the order.
Materiel release orderAn order issued by an accountable supply system manager (usually an inventory control point or accountable depot/stock point) directing a non-accountable activity (usually a storage site or materiel drop point) within the same supply distribution complex to release and ship materiel.
Matrix organisational structureAn organisational structure in which two (or more) channels of command, budget responsibility, and performance measurement exist simultaneously. For example, both product and functional forms of organisation could be implemented simultaneously, that is, the product and functional managers have equal authority and employees report to both managers.
MAXThe lowest inventory quantity that is desired at a ship to location or selling location. This quantity will over-ride the forecast number if the forecast climbs above the MAX. Maximum stock
MaximiseTo increase or make as great as possible
Maximum capacityThe most capacity that can be obtained from a given resource, as opposed to its planned or demonstrated capacity (as in a machine normally operated 10 hours a day with a maximum capacity of 24 hours/day). Sometimes used in what-if planning for stress or volume testing.
Maximum inventoryThe planned maximum allowable inventory for an item based on its planned lot size and target safety stock.
Maximum on orderA specified limit for the total dollar sum of open orders for a given customer or vendor that is checked by the system at entry time, and may prevent acceptance of the order.
Maximum order quantityAn order quantity modifier applied after the lot size has been calculated, that limits the order quantity to a pre-established maximum.
Maximum payloadThe amount of weight of cargo which a container is designed to carry.
Maximum rateThe highest rate that may be charged.
M-commerceMobile commerce applications involve using a mobile phone to carry out financial transactions. This usually means making a payment for goods or transferring funds electronically. Transferring money between accounts and paying for purchases are electronic commerce applications. An emerging application, electronic commerce has been facilitated by developments in other areas in the mobile world, such as dual slot phones and other smarter terminals and more standardised protocols, which allow greater interactivity and therefore more sophisticate services.
MCTFMaritime Cabotage Task Force
M-day calendarSee Manufacturing Calendar
MeanThe arithmetic average of a group of values. Synonym: arithmetic mean.
Mean absolute deviationThe sum of the absolute value of error or deviation from an expected value, divided by the number of data points. Often used as a base measure of forecast accuracy.
Mean time between failuresA quality and maintenance measure of the average time between failures for a resource or product, that cause them to be unusable.
Measurement tonEquals 40 cubic feet; used in water transportation rate making.
MEBAMarine Engineers Beneficial Association
Mechanical lifterA lifter composed of two or more rigid parts that move with respect to each other to attach the load to the hoisting device. All movements of this grab as it attaches to the load are manually actuated.
MedianThe middle value in a set of measured values when the items are arranged in order of magnitude. If there is no single middle value, the median is the mean of the two middle values.
Mega carrierOne of the predatory massive shipping lines that compete on the largely saturated east/west trades.
MEPCMarine Environment Protection Committee, a major committee within the International Maritime Organisation.
MergerThe combination of two or more carriers into one company for the ownership, management, and operation of the properties previously operated on a separate basis.
MERPACMerchant Marine Personnel Advisory Committee, an industry advisory body to the U.S. Coast Guard.
MESManufacturing execution system (see separate listing)
MESAManufacturing Enterprise Solutions Association
Mesh containerOften referred to as a wire mesh container, this material handling device is made from welded metal wire mesh and possesses a substructure to give the container strength and rigidity. A container that is made of woven, knit or knotted material of open texture with evenly spaced holes.
Mesh sizeThe centre-to -centre spacing of the wire elements on a wire mesh container.
Message filterA function in planning systems that suppresses the generation of an exception message based on a date, quantity, dollar or other parameter in order to reduce the overall message volume and focus on those with higher severity levels. For example, the filter might indicate that unless a production order needs to be rescheduled in by at least three days, the message is not generated.
Metal containerA receptacle (such as a box, enclosure) or a formed or flexible covering for the packing or shipment of articles, goods, or commodities. Containers may be constructed of plastic, welded wire, corrugated steel or aluminium.
MeteringThe process of measuring the usage of volume of a system, such as software functions that monitor and sometimes control the number of concurrent users as specified in the licensing agreement.
Method study reviewEngineers audit the time standards established (from the time study) for the job description to make sure the standards are fair and accurate.
MethodsA means or manner of procedure, especially a regular and systematic way of accomplishing something
Metric containerA container which has its dimensions and capacities expressed in metric terms. These containers are often designed to accommodate metric size and weight materials or goods, i.e, a one metric ton capacity container as opposed to a one imperial ton capacity container.
Metric ton2,204.6 pounds.
MetricsA standard or basis of measurement, such as cost, size, volume, etc.
MezzanineA stand alone structure constructed within an existing building or structure which is designed to maximise clear space under and above the mezzanine. Also referred to as a “free standing, wide span mezzanine”, this type of mezzanine incorporates wide column spacing and high PSF(pounds per square foot) capacity. Usually engineered for a specific need.
MFNDesignation for countries which receive preferential tariff rates , Most Favoured Nation. This is no longer the best tariff structure available.
MHAMMaterial Handling Accessory Manufacturers
MHIAMaterial Handling Industry of America.
MIBMarine Index Bureau.
MicroIs an English prefix of Greek origin that refers to an object as being smaller than an object or scale of focus, in contrast to macro
MicrobridgeA system of through rates and service offered by a carrier for cargo shipments from any inland U.S. location to a port by sea, to a foreign port, and finally overland to foreign inland destination.
Micro-load AS/RSA type of automatic storage and retrieval system that handles small items that are typically contained in very small containers, totes or trays, with load weights typically less than 100 lbs.
MiddlewareThe interim, Single Stock Fund automation architecture used to link current retail level logistics systems (i.e., SARRS) to the National logistics system (CCSS). Middleware intercepts all outgoing Corps Theater Automated Data Process Support centre (CTASC) supply and financial transactions, makes changes to those transactions, and reroutes the modified supply and financial transactions back through the CTASC to the national system.
Mileage allowanceAn allowance based upon distance and given by railroads to shippers using private rail cars.
Mileage rateA rate based upon the number of miles the commodity is shipped.
MilestoneA key event that defines the end of a phase or reaching a target or goal. Project management systems normally define milestones as activities with zero duration.
Military supply chain managementA cross-functional approach to procuring, producing and delivering products and services. The broad management scope includes sub-suppliers, suppliers, internal information and funds flow.
Military timeThe use of a 24-hour clock instead of AM and PM when reporting actual labour or machine time or specifying deliveries.
Milk runA milk run consists of a pickup and/or delivery route where several stops are made. Usually it refers to a regularly run route, but it may also refer to a one-time run where several stops are made. Some consider a milk run to mean a route where shipments are delivered and inbound materials picked up in the same run.
MILVANMilitary-owned demountable container, conforming to United States and international standards, operated in a centrally controlled fleet for movement of military cargo.
Mini-land bridgeAn inter-modal movement in which the shipment is moved from a foreign country to the U.S. by water and then moved across the U.S. by railroad to a destination that is a port city, or vice versa for exports from a U.S. port city.
Mini-load AS/RSA type of automatic storage and retrieval system that handles loads that are typically contained in small containers or totes, with load weights typically falling in the100 to 500 lb. Range, and occasionally as much as 750 to 1000 lbs. See also AS/RS
Minimum inventory levelThe lowest desired amount of inventory, used by planning systems to generate replenishments that will keep projected on-hand at that level or higher.
Minimum order quantityThe order quantity used as the minimum for a planned order, even if the lot size rule calculated a smaller amount.
Minimum weightThe shipment weight specified by the carrier’s tariff as the minimum weight required when using the TL or CL rate; the rate discount volume.
Min-max orderingA replenishment and inventory management system that sets a minimum inventory level, used to trigger a reorder when the available plus incoming receipt total is less than the min. The amount of the order is the difference between the calculated (less than min) inventory and a predefined max. Min-max systems are typically not time-phased.
Minor repairRepair which, in general, permits quick return to serviceability without extensive disassembly; can be accomplished with few tools and little or no equipment, and normally does not require evacuation to a rear echelon
MIRAIDMaritime Institute for Research and Industrial Development
Miscellaneous issueAn issue from stock for a non-production use, such as marketing samples, engineering test, etc. that is usually charged to that department and not included in demand history calculations.
Misguided capacity plansPlans or forecasts for capacity utilisation, which are based on inaccurate assumptions or input data.
MitigationThe reduction of damage from risk due to lessening the chance of occurrence, or by minimising its effect when it does occur.
Mixed shipmentA shipment consisting of more than one commodity, articles described under more than one class or commodity rate item in a tariff.
Mixed-mode manufacturingAn environment that uses a combination of discrete, repetitive or process manufacturing instead of only one type. A company may produce major lower level subassemblies in high volumes using repetitive, schedule-based techniques while using a discrete production order-based method to conduct final assembly operations for specific customer orders.
Mixed-model productionA scheduling technique that uses the goal of making every product every day and only when required by demand, as opposed to large runs of individual items that will stay in stock for a period of time. It normally requires operating flexibility, short lead times and small lot sizes.
MM&PMaster, Mates and Pilots Union
Mobile equipmentMaterial handling equipment that is designed to move within and outside a facility to transport materials, people and maintenance/service supplies. Such equipment can range from industrial trucks, personnel carriers, lifts and AGV’s.
Mobile rackA rack with wheels at the base that permit movement of the entire rack structure along tracks.
Mobile shelvingA shelving system that is mounted on floor or overhead tracks. The self- contained unit may nest or move against other units to facilitate space savings or move away from each other to provide greater access.
Modal splitThe relative use made of the modes of transportation; the statistics used include ton-miles, passenger-miles, and revenue.
Mode of transportThe various modes used for a movement. For each mode, there are several means of transport. They are:
ModelA system that describes or predicts an associated process based on the definition of variables, rules and equations. A properly-defined model enables analyzing the possible effects of changes in the underlying process based on changes in the model.
ModificationThe alteration, conversion, or modernisation of an end item of investment equipment that changes or improves the original purpose or operational capacity in relation to effectiveness, efficiency, reliability, or safety of that item.
Modification table of organisation and equipmentA table that prescribes in a single document the modification of a basic table of organisation and equipment necessary to adapt it to the needs of a specific unit or type of unit. See also table of organisation and equipment
Modification work orderA Department of the Army publication providing authority and instructions for the modification of Army materiel
MODUMobile Offshore Drilling Unit.
ModularDesigned with standardised units or dimensions, as for easy assembly and repair or flexible arrangement and use.
Modular bill of materialA bill of material used for products configured from many possible combinations of modules, or options. It normally contains a group of common components always used that do not have to be chosen, feature categories (such as monitor size) that represent a part of the product to be configured, and options within the feature as that are the actual sub-assemblies or components to be used. Often used in ATO environments.
Modular designA modular building block principal which normally employs quick disconnect technique features and is the method used by materiel developers to simplify design and construction, or assembly, and to optimise on a means for fault isolation/diagnosis, replacement, and repair of those modules which malfunction or become defective.
Modular drawer cabinetModular drawer cabinets make efficient use of storage space by providing secured enclosed storage for small or high value parts. The operator has a clear view of all stored items as the drawers are withdrawn from the cabinet. An added value of modular drawers is that each drawer can be positioned or sub-divided into smaller storage cells. Modular drawer cabinets, used extensively in tool cribs, parts supply rooms and maintenance areas, provide higher density, improved organisation, more security and protection and a greater utilisation of storage space. Such modular drawer cabinets may be wheeled or fixed in place.
Modular mezzanineA standardised, pre-fabricated mezzanine structure built in “packaged”/”off the shelf” sizes, loading capacities and spans. Usually limited to lighter PSF (pounds per square inch) capacities and rapid delivery and rapid installation are benefits of the modular mezzanine.
Module1. A standard or unit for measuring.
Molded palletA pallet formed in a mold and made from plastic, wood particles or wood flakes.
Monorail Manufacturers AssociationAn independent incorporated trade association affiliated with the Material Handling Industry. The membership of MMA is made up of companies which produce the preponderance of patented and enclosed track under hung cranes and monorail systems.
MonorailsA single run of overhead track on which carriers (trolleys) travel.
Monte Carlo simulationA method that estimates possible outcomes from a set of random variables by simulating a process a large number of times and observing the outcomes.
Mooring lineA cable or line to tie up a ship.
Motorised pallet truckMotorised pallet trucks are the motorised version of the pallet jack. They come in “Walkie” versions or “Rider” versions. As you would expect, the walkie is designed for the operator to walk along with the truck as they move loads, while the rider has a small platform that the operator stands on. The riders work well for frequent moving of loads over extended distances within warehouses and manufacturing operations. a.k.a. Walkie, Walkie-rider, Rider.
Move inThe process that goods are first moved into a new warehouse facility.
Move outThe process that all goods are moved out from the warehouse facility where they used to be stored.
Move ticketA document used to move inventory within a facility. Warehouse management systems use move tickets to direct and track material movements. In a paperless environment the electronic version of a move ticket is often called a task or a trip.
Move timeThe portion of total lead time an item is being moved from one department or operation to another.
MovementThe act or an instance of moving; a change in place or position.
Movement control1. The planning, routing, scheduling, and control of personnel and cargo movements over lines of communications.
Moving averageThe average of the last ‘x’ number of numerical values out of a set that contains a larger number of historical values. A six-month simple moving average forecast is the average of the demand from the previous six periods; with each new period the last period is added and the oldest period deleted before recalculating the new average.
Moving timeThe time zone of goods in transit to the time that is received by customer.
MRP generationA term used to describe the running of the programs that convert demand into planned orders. Depending on the operation, MRP Generation may be run daily, weekly, or even monthly. Since this processing requires a lot of system resources it is generally confined to off hours or weekend processing.
MSBMaritime Subsidy Board.
MSCMaritime Safety Committee, a major committee within the International Maritime Organisation.
MTCMaritime Transport Committee, OECD
MTDMaritime Trades Department, AFL-CIO.
MudaThe Japanese term for waste used in lean manufacturing and agile software development
Multi level shelvingMore than two levels tiered one on top of the other with each tier serviced from a separate level.
Multilateral agreementAn international pact or agreement involving three or more parties.
Multilevel backflushA system that back flushes multiple levels of components based on the production of a parent item, instead of just the immediate lower level (a single level back flush). When the parent is produced, its components are back flushed and for component that is a manufactured item, it is automatically produced by the system which then proceeds to back flush the next level components of that item. It enables the entry of fewer transactions but may create issues with lead time and lot tracking.
Multilevel bill of materialA bill of material that contains multiple successive levels, with the top level typically coded as level 0, its immediate components as level 1, and so on. It can be used to track all requirements and costs involved in producing a parent item down to the lowest-level purchased parts.
Multilevel master production scheduleA version of MPS that allows the master scheduling (and thus forecasts and customer orders) of any level in the bill of material, instead of just the top-level items. Lower level items may be master scheduled if they are critical subassemblies or if the completion of that item constitutes the bulk of the lead time and cost and requires only minor labour or material additions to turn into a finished product (adding language labels or instructions to an otherwise-finished product).
MultimodalUsing more than one transportation mode to move a load of goods.
MultipackA shipment of more than one line item consolidated for a single addressee in one package.
Multiple regressionAn equation or analysis where two or more independent (predictor) variables affect the dependent variable.
Multiple row, single face shelvingOne generally continuous row of units joined together back to back to be serviced from one aisle for long items of considerable weight.
Multiple trip palletA pallet designed and built for use in multiple trips and transports
Multiple units of measureThe use of more than one unit of measure for a given item for orders and transactions. A given item may be internally stocked in units but entered on customer orders in cases, packs or some other measure. Conversion tables translate all requirements into a base measure for planning, scheduling and inventory valuation.
Multiple-car rateA railroad rate that is lower for shipping more than one carload rather than just one carload at a time.
Multipoint-to-multipointA communications or logistics network in which each element can directly link to all others, and is not restricted to a specific path or set of links.
Multi-skilledPertaining to individuals who are certified to perform a variety of tasks.
Multi-userA system or program designed to accommodate simultaneous use by multiple users, and protects against duplication, override or corruption of data when the same records or resources are accessed.
Multinational companyA company that both produces and markets products in different countries.
Multipurpose shipAny ship capable of carrying different types of cargo which require different methods of handling. There are several types of ships falling into this category, for example, ships which can carry roll on/roll off cargo together with containers.

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