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Glossary · Nouns · M

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TermTypeDefinitionClassificationsUpdated
Manouninformal terms for a motherverifiedMay 18, 2026
Ma'amnouna woman of refinementverifiedMay 18, 2026
Maarnouna flat-bottomed volcanic crater that was formed by an explosionverifiedMay 18, 2026
Macnouna waterproof raincoat made of rubberized fabricverifiedMay 18, 2026
MAC AddressnounMWEA physical address; a numeric value that uniquely identifies that network device from every other device on the planet.NetworkMay 9, 2026
MAC headernounMWERepresents the hardware address of an network interface controller (NIC) inside a data packetNetworkMay 12, 2026
Macadamnouna paved surface having compressed layers of broken rocks held together with tarverifiedMay 18, 2026
Macadamianounany tree of the genus MacadamiaverifiedMay 18, 2026
Macadamia NutnounMWEsmall Australian tree with racemes of pink flowersverifiedMay 18, 2026
Macadamia Nut TreenounMWEsmall Australian tree with racemes of pink flowersverifiedMay 18, 2026
Macadamia TreenounMWEany tree of the genus MacadamiaverifiedMay 18, 2026
Macambanountropical American feather palm having a swollen spiny trunk and edible nutsverifiedMay 18, 2026
Macaquenounshort-tailed monkey of rocky regions of Asia and AfricaverifiedMay 18, 2026
Macaroninouna British dandy in the 18th century who affected Continental mannerismsverifiedMay 18, 2026
Macaroni and CheesenounMWEmacaroni prepared in a cheese sauceverifiedMay 18, 2026
Macaroni SaladnounMWEhaving macaroni as the baseverifiedMay 18, 2026
Macaroni WheatnounMWEwheat with hard dark-colored kernels high in gluten and used for bread and pastaverifiedMay 18, 2026
Macaroonnounchewy cookie usually containing almond pasteverifiedMay 18, 2026
Macawnounlong-tailed brilliantly colored parrot of Central America and South AmericaverifiedMay 18, 2026
Macenouna ceremonial staff carried as a symbol of office or authorityverifiedMay 18, 2026
Macebearernounan official who carries a mace of officeverifiedMay 18, 2026
Macedoinenounmixed diced fruits or vegetablesverifiedMay 18, 2026
Macernounan official who carries a mace of officeverifiedMay 18, 2026
Macerationnounextreme leanness (usually caused by starvation or disease)verifiedMay 18, 2026
Macguffinnoun(film) a plot element that catches the viewers' attention or drives the plotverifiedMay 18, 2026
Machetenouna large heavy knife used in Central and South America as a weapon or for cutting vegetationverifiedMay 18, 2026
Machicolationnouna projecting parapet supported by corbels on a medieval castleverifiedMay 18, 2026
Machinationnouna crafty and involved plot to achieve your (usually sinister) endsverifiedMay 18, 2026
Machinatornouna member of a conspiracyverifiedMay 18, 2026
Machine BoltnounMWEa bolt with a square or hexagonal head on one end and a threaded shaft on the other endverifiedMay 18, 2026
Machine CodenounMWEa set of instructions coded so that the computer can use it directly without further translationverifiedMay 18, 2026
Machine GunnounMWEa rapidly firing automatic gun (often mounted)verifiedMay 18, 2026
Machine GunnernounMWEa serviceman in the artilleryverifiedMay 18, 2026
Machine LanguagenounMWEa set of instructions coded so that the computer can use it directly without further translationverifiedMay 18, 2026
Machine LearningnounMWEA branch of Artificial Intelligence (AI) that focuses on the development of systems capable of learning from data to perform a task without being explicitly programmed to perform that task. Learning refers to the process of optimizing model parameters through computational techniques such that the model's behaviour is optimized for the training task.CapabilityMay 18, 2026
machine learning and evolutionnounMWEA field concerned with designing and developing artificial intelligence algorithms for automated knowledge discovery and innovation by information systems.CapabilityMay 9, 2026
Machine ObservationnounMWEMachine detection and interpretation of relevant and meaningful events and conditions that impact operation of the computer system itself or other dependent mechanisms or processes essential to the purpose of the system.ProcessMay 18, 2026
Machine OperationnounMWEan elementary operation that a computer is designed and built to performverifiedMay 18, 2026
Machine PistolnounMWEa fully automatic pistolverifiedMay 18, 2026
Machine PoliticiannounMWEa politician who belongs to a small clique that controls a political party for private rather than public endsverifiedMay 18, 2026
Machine Readable DictionarynounMWEa machine-readable version of a standard dictionaryverifiedMay 18, 2026
Machine RiflenounMWElight machine gunverifiedMay 18, 2026
Machine ScrewnounMWEa screw used either with a nut or with a tapped holeverifiedMay 18, 2026
Machine ShopnounMWEworkshop where metal is cut and shaped etc., by machine toolsverifiedMay 18, 2026
Machine StitchnounMWEa sewing stitch made by a sewing machine, sometimes using more than one threadverifiedMay 18, 2026
Machine ToolnounMWEa powered machine for cutting or shaping or finishing metals or other materialsverifiedMay 18, 2026
Machine TranslationnounMWEthe use of computers to translate from one language to anotherverifiedMay 18, 2026
Machine-Displayable TextnounMWEelectronic text that is stored and used in the form of a digital imageverifiedMay 18, 2026
Machine-Oriented LanguagenounMWEa programming language designed for use on a specific class of computersverifiedMay 18, 2026
Machine-Readable TextnounMWEelectronic text that is stored as strings of characters and that can be displayed in a variety of formatsverifiedMay 18, 2026
Machinerynouna system of means and activities whereby a social institution functionsverifiedMay 18, 2026
Machinistnouna craftsman skilled in operating machine toolsverifiedMay 18, 2026
Machinist's VisenounMWEa vise with two parallel iron jaws and a wide opening belowverifiedMay 18, 2026
Machismonounexaggerated masculinityverifiedMay 18, 2026
Machmeternounspeedometer for measuring the speed of an aircraft relative to the speed of soundverifiedMay 18, 2026
Macho-Mannouna man who is virile and sexually activeverifiedMay 18, 2026
Macintoshnouna lightweight waterproof, usually made of rubberized fabricverifiedMay 18, 2026
Macknouna waterproof raincoat made of rubberized fabricverifiedMay 18, 2026
Mackerelnounflesh of very important usually small (to 18 in) fatty Atlantic fishverifiedMay 18, 2026
Mackerel ScadnounMWEsmall silvery fishverifiedMay 18, 2026
Mackerel ShadnounMWEsmall silvery fishverifiedMay 18, 2026
Mackerel SharknounMWEfierce pelagic and oceanic sharksverifiedMay 18, 2026
Mackerel SkynounMWEa sky filled with rows of cirrocumulus or small altocumulus cloudsverifiedMay 18, 2026
Mackinawnouna heavy woolen cloth heavily napped and felted, often with a plaid designverifiedMay 18, 2026
Mackintoshnouna lightweight waterproof (usually rubberized) fabricverifiedMay 18, 2026
Macklenouna printed impression that is blurred or doubledverifiedMay 18, 2026
Maconnounfine Burgundy wine usually white and dryverifiedMay 18, 2026
Maconnaisnounfine Burgundy wine usually white and dryverifiedMay 18, 2026
Macrencephalynounan abnormally large braincaseverifiedMay 18, 2026
Macro InstructionnounMWEa single computer instruction that results in a series of instructions in machine languageverifiedMay 18, 2026
macro virusnounMWEA virus that attaches itself to documents and uses the macro programming capabilities of the document’s application to execute and propagate.ThreatMay 9, 2026
Macrobiotic DietnounMWEa diet consisting chiefly of beans and whole grainsverifiedMay 18, 2026
Macrobioticsnounthe theory of promoting health and longevity by means of diet (especially whole beans and grains)verifiedMay 18, 2026
Macrocephalynounan abnormally large headverifiedMay 18, 2026
Macrocosmnouneverything that exists anywhereverifiedMay 18, 2026
Macrocytenounabnormally large red blood cell (associated with pernicious anemia)verifiedMay 18, 2026
Macrocytic AnaemianounMWEanemia in which the average size of erythrocytes is larger than normalverifiedMay 18, 2026
Macrocytic AnemianounMWEanemia in which the average size of erythrocytes is larger than normalverifiedMay 18, 2026
Macrocytosisnounthe presence of macrocytes in the bloodverifiedMay 18, 2026
Macroeconomic ExpertnounMWEan economist who specializes in macroeconomicsverifiedMay 18, 2026
Macroeconomicsnounthe branch of economics that studies the overall working of a national economyverifiedMay 18, 2026
Macroeconomistnounan economist who specializes in macroeconomicsverifiedMay 18, 2026
Macroevolutionnounevolution on a large scale extending over geologic era and resulting in the formation of new taxonomic groupsverifiedMay 18, 2026
Macroglianountissue consisting of large stellate neuroglial cellsverifiedMay 18, 2026
Macroglossianouna congenital disorder characterized by an abnormally large tongueverifiedMay 18, 2026
Macromoleculenounany very large complex moleculeverifiedMay 18, 2026
Macronnouna diacritical mark (-) placed above a vowel to indicate a long soundverifiedMay 18, 2026
Macrophagenouna large phagocyteverifiedMay 18, 2026
Macroscopic AnatomynounMWEthe study of the structure of the body and its parts without the use of a microscopeverifiedMay 18, 2026
Macrosporangiumnouna plant structure that produces megasporesverifiedMay 18, 2026
Macrosporenounlarger of the two types of spore produced in heterosporous plantsverifiedMay 18, 2026
Macrotusnounlarge-eared greyish bat of southern California and northwestern MexicoverifiedMay 18, 2026
Macrozamianounany treelike cycad of the genus Macrozamia having erect trunks and pinnate leaves and large cones with sometimes edible nutsverifiedMay 18, 2026
Maculanouna small yellowish central area of the retina that is rich in cones and that mediates clear detailed visionverifiedMay 18, 2026
Macula LuteanounMWEa small yellowish central area of the retina that is rich in cones and that mediates clear detailed visionverifiedMay 18, 2026
Macular AreanounMWEa small yellowish central area of the retina that is rich in cones and that mediates clear detailed visionverifiedMay 18, 2026
Macular DegenerationnounMWEeye disease caused by degeneration of the cells of the macula lutea and results in blurred visionverifiedMay 18, 2026
Macular EdemanounMWEan eye disease caused by a swelling of the macula resulting from leakage and accumulation of fluidverifiedMay 18, 2026
Maculationnounthe act of spotting or staining somethingverifiedMay 18, 2026
Maculenouna patch of skin that is discolored but not usually elevatedverifiedMay 18, 2026