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Glossary · Nouns · M

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TermTypeDefinitionClassificationsUpdated
Mental DexteritynounMWEintelligence as revealed by quickness and alertness of mindverifiedMay 18, 2026
Mental DiseasenounMWEany disease of the mindverifiedMay 18, 2026
Mental DisordernounMWE(psychiatry) a psychological disorder of thought or emotionverifiedMay 18, 2026
Mental DisturbancenounMWE(psychiatry) a psychological disorder of thought or emotionverifiedMay 18, 2026
Mental EnergynounMWEan actuating force or factorverifiedMay 18, 2026
Mental ExhaustionnounMWEexhaustion that affects mental keennessverifiedMay 18, 2026
Mental FacultynounMWEone of the inherent cognitive or perceptual powers of the mindverifiedMay 18, 2026
Mental HealthnounMWEthe psychological state of someone who is functioning at a satisfactory level of emotional and behavioral adjustmentverifiedMay 18, 2026
Mental HomenounMWEa hospital for mentally incompetent or unbalanced personverifiedMay 18, 2026
Mental HospitalnounMWEa hospital for mentally incompetent or unbalanced personverifiedMay 18, 2026
Mental HygienenounMWEthe branch of psychiatry concerned with psychological methodsverifiedMay 18, 2026
Mental IllnessnounMWEany disease of the mindverifiedMay 18, 2026
Mental ImagenounMWEan iconic mental representationverifiedMay 18, 2026
Mental ImagerynounMWEthe ability to form mental images of things or eventsverifiedMay 18, 2026
Mental InstitutionnounMWEa hospital for mentally incompetent or unbalanced personverifiedMay 18, 2026
Mental LexiconnounMWEa language user's knowledge of wordsverifiedMay 18, 2026
Mental MeasurementnounMWEa generic term used to cover any application of measurement techniques to the quantification of mental functionsverifiedMay 18, 2026
Mental NotenounMWEspecial attention with intent to rememberverifiedMay 18, 2026
Mental ObjectnounMWEthe sum or range of what has been perceived, discovered, or learnedverifiedMay 18, 2026
Mental PicturenounMWEa clear and telling mental imageverifiedMay 18, 2026
Mental ProcessnounMWE(psychology) the performance of some composite cognitive activityverifiedMay 18, 2026
Mental QuicknessnounMWEintelligence as revealed by an ability to give correct responses without delayverifiedMay 18, 2026
Mental RejectionnounMWEdoubt about the truth of somethingverifiedMay 18, 2026
Mental RepresentationnounMWEa presentation to the mind in the form of an idea or imageverifiedMay 18, 2026
Mental ReservationnounMWEan unstated doubt that prevents you from accepting something wholeheartedlyverifiedMay 18, 2026
Mental RetardationnounMWElack of normal development of intellectual capacitiesverifiedMay 18, 2026
Mental SoundnessnounMWEthe healthy psychological state of someone with good judgmentverifiedMay 18, 2026
Mental StatenounMWE(psychology) a mental condition in which the qualities of a state are relatively constant even though the state itself may be dynamicverifiedMay 18, 2026
Mental StrainnounMWE(psychology) nervousness resulting from mental stressverifiedMay 18, 2026
Mental SynthesisnounMWEthe creation of a constructverifiedMay 18, 2026
Mental TelepathistnounMWEsomeone with the power of communicating thoughts directlyverifiedMay 18, 2026
Mental TestnounMWEany standardized procedure for measuring sensitivity or memory or intelligence or aptitude or personality etcverifiedMay 18, 2026
Mental TestingnounMWEany standardized procedure for measuring sensitivity or memory or intelligence or aptitude or personality etcverifiedMay 18, 2026
Mental UnsoundnessnounMWEa state of mental disturbance and disorientationverifiedMay 18, 2026
Mentalismnoun(philosophy) a doctrine that mind is the true reality and that objects exist only as aspects of the mind's awarenessverifiedMay 18, 2026
Mentalitynouna habitual or characteristic mental attitude that determines how you will interpret and respond to situationsverifiedMay 18, 2026
Mentally RetardednounMWEpeople collectively who are mentally retardedverifiedMay 18, 2026
Mentationnounthe process of using your mind to consider something carefullyverifiedMay 18, 2026
Mentholnouna crystalline compound that has the cool and minty taste and odor that occurs naturally in peppermint oilverifiedMay 18, 2026
Mentholated SalvenounMWEa salve containing mentholverifiedMay 18, 2026
Mentionernouna speaker who refers to something briefly or incidentallyverifiedMay 18, 2026
Mentumnouna projection like a chin formed by the sepals and base of the column in some orchidsverifiedMay 18, 2026
Menunoun(computer science) a list of options available to a computer userverifiedMay 18, 2026
Mepacrinenouna drug used to treat certain worm infestations and once used to treat malaria, trade name AtabrineverifiedMay 18, 2026
Meperidinenouna synthetic narcotic drug (trade name Demerol) used to treat painverifiedMay 18, 2026
Meperidine HydrochloridenounMWEa synthetic narcotic drug (trade name Demerol) used to treat painverifiedMay 18, 2026
Mephenytoinnouna toxic anticonvulsant drug (trade name Mesantoin) used in the treatment of epilepsy when less toxic anticonvulsants have been ineffectiveverifiedMay 18, 2026
Mephitisnouna poisonous or foul smelling gas emitted from the earthverifiedMay 18, 2026
Mephobarbitalnouna long-acting crystalline barbiturate (trade name Mebaral) used as a sedative and as an anticonvulsant in the treatment of epilepsyverifiedMay 18, 2026
Meprobamatenouna sedative and tranquilizer (trade name Miltown and Equanil and Meprin) used to treat muscle tension and anxietyverifiedMay 18, 2026
Meqnounone-thousandth of an equivalentverifiedMay 18, 2026
Meralgianounpain in the thighverifiedMay 18, 2026
Merbrominenouna mercurial compound applied topically as an antisepticverifiedMay 18, 2026
Mercantile AgencynounMWEan organization that provides businesses with credit ratings of other firmsverifiedMay 18, 2026
Mercantile EstablishmentnounMWEa place of business for retailing goodsverifiedMay 18, 2026
Mercantile LawnounMWEthe body of rules applied to commercial transactionsverifiedMay 18, 2026
Mercantile SystemnounMWEan economic system (Europe in 18th century) to increase a nation's wealth by government regulation of all of the nation's commercial interestsverifiedMay 18, 2026
Mercantilismnounan economic system (Europe in 18th century) to increase a nation's wealth by government regulation of all of the nation's commercial interestsverifiedMay 18, 2026
Mercaptopurinenouna drug (trade name Purinethol) that interferes with the metabolism of purine and is used to treat acute lymphocytic leukemiaverifiedMay 18, 2026
Mercernouna dealer in textiles (especially silks)verifiedMay 18, 2026
Merchandisernouna businessperson engaged in retail tradeverifiedMay 18, 2026
Merchandisingnounthe exchange of goods for an agreed sum of moneyverifiedMay 18, 2026
Merchantnouna businessperson engaged in retail tradeverifiedMay 18, 2026
Merchant acquirernounMWEBankcard association members that initiate and maintain contractual agreements with merchants for the purpose of accepting and processing bankcard transactions.OrganizationRegulatedPCIMay 9, 2026
Merchant BanknounMWEa credit card processing bankverifiedMay 18, 2026
Merchant MarinenounMWEconveyance provided by the ships belonging to one country or industryverifiedMay 18, 2026
Merchant processingnounMWEActivity for the acceptance and settlement of bankcard products and transactions from merchants through the payment system.ProcessRegulatedPCIMay 9, 2026
Merchant ShipnounMWEa cargo shipverifiedMay 18, 2026
Merchant VesselsnounMWEconveyance provided by the ships belonging to one country or industryverifiedMay 18, 2026
Merchant-Venturernouna merchant who undertakes a trading venture (especially a venture that sends goods overseas)verifiedMay 18, 2026
Merchantabilitynounthe state of being fit for marketverifiedMay 18, 2026
Merchantmannouna cargo shipverifiedMay 18, 2026
Mercifulnessnounleniency and compassion shown toward offenders by a person or agency charged with administering justiceverifiedMay 18, 2026
Mercilessnessnouninhumaneness evidenced by an unwillingness to be kind or forgivingverifiedMay 18, 2026
Mercurial OintmentnounMWEan ointment containing mercuryverifiedMay 18, 2026
Mercuric ChloridenounMWEa white poisonous soluble crystalline sublimate of mercuryverifiedMay 18, 2026
Mercurous ChloridenounMWEa tasteless colorless powder used medicinally as a catharticverifiedMay 18, 2026
Mercurynouna heavy silvery toxic univalent and bivalent metallic elementverifiedMay 18, 2026
Mercury BarometernounMWEbarometer that shows pressure by the height of a column of mercuryverifiedMay 18, 2026
Mercury CellnounMWEa primary cell consisting of a zinc anode and a cathode of mercury oxide and an electrolyte of potassium hydroxideverifiedMay 18, 2026
Mercury ChloridenounMWEa white poisonous soluble crystalline sublimate of mercuryverifiedMay 18, 2026
Mercury FulminatenounMWEa fulminate that when dry explodes violently if struck or heatedverifiedMay 18, 2026
Mercury PoisoningnounMWEa toxic condition caused by ingesting or inhaling mercuryverifiedMay 18, 2026
Mercury ThermometernounMWEthermometer consisting of mercury contained in a bulb at the bottom of a graduated sealed glass capillary tube marked in degrees Celsius or FahrenheitverifiedMay 18, 2026
Mercury-In-Glass Clinical ThermometernounMWEa mercury thermometer designed to measure the temperature of the human bodyverifiedMay 18, 2026
Mercury-In-Glass ThermometernounMWEthermometer consisting of mercury contained in a bulb at the bottom of a graduated sealed glass capillary tube marked in degrees Celsius or FahrenheitverifiedMay 18, 2026
Mercury-Vapor LampnounMWEultraviolet lamp that emits a strong bluish light (rich in ultraviolet radiation) as electric current passes through mercury vaporverifiedMay 18, 2026
Mercynounleniency and compassion shown toward offenders by a person or agency charged with administering justiceverifiedMay 18, 2026
Mercy KillingnounMWEthe act of killing someone painlessly (especially someone suffering from an incurable illness)verifiedMay 18, 2026
Mercy SeatnounMWEthe golden covering of the ark of the covenantverifiedMay 18, 2026
Merestonenounan old term for a landmark that consisted of a pile of stones surmounted by an upright slabverifiedMay 18, 2026
Meretriciousnessnounan appearance of truth that is false or deceptiveverifiedMay 18, 2026
Mergansernounlarge crested fish-eating diving duck having a slender hooked bill with serrated edgesverifiedMay 18, 2026
Mergernounan occurrence that involves the production of a unionverifiedMay 18, 2026
Merger AgreementnounMWEcontract governing the merger of two or more companiesverifiedMay 18, 2026
Mericarpnouna carpel with one seedverifiedMay 18, 2026
Meringuenounsweet topping especially for pies made of beaten egg whites and sugarverifiedMay 18, 2026
Meringue KissnounMWEa kiss made of sugar and egg white and baked slowlyverifiedMay 18, 2026
Merinonounwhite sheep originating in Spain and producing a heavy fleece of exceptional qualityverifiedMay 18, 2026
Merino SheepnounMWEwhite sheep originating in Spain and producing a heavy fleece of exceptional qualityverifiedMay 18, 2026