Glossary · Nouns · M
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TermTypeDefinitionClassificationsUpdated
Mail relay servernounMWEAn electronic mail (e-mail) server that relays messages so that neither the sender nor the recipient is a local userSystem
Main ClausenounMWEa clause in a complex sentence that can stand alone as a complete sentenceverified
Main DiagonalnounMWEthe diagonal of a square matrix running from the upper left entry to the lower right entryverified
Main Entry WordnounMWEthe form of a word that heads a lexical entry and is alphabetized in a dictionaryverified
Main FilenounMWE(computer science) a computer file that is used as the authority in a given job and that is relatively permanentverified
Main OfficenounMWE(usually plural) the office that serves as the administrative center of an enterpriseverified
Main RotornounMWErotor consisting of large rotating airfoils on a single-rotor helicopter that produce the lift to support the helicopter in the airverified
MainframenounAn industry term for a large computer, typically used for the commercial applications of businesses and other large-scale computing purposes. Generally, a mainframe is associated with centralized rather than distributed computing.System
Mainframe ComputernounMWEa large digital computer serving 100-400 users and occupying a special air-conditioned roomverified
Mainsheetnoun(nautical) a line (rope or chain) that regulates the angle at which a sail is set in relation to the windverified
Mainspringnounthe most important spring in a mechanical device (especially a clock or watch)verified
maintenancenounThe process of making repairs and keeping components of an asset in good condition so that the asset may remain in operating condition and last its entire useful life.Process
Maintenance HooknounMWESpecial instructions (trapdoors) in software allowing easy maintenance and additional feature development. Since maintenance hooks frequently allow entry into the code without the usual checks, they are a serious security risk if they are not removed prior to live implementation.VulnerabilityRegulatedCUI
Maisonettenouna self-contained apartment (usually on two floors) in a larger house and with its own entrance from the outsideverified
Maisonnettenouna self-contained apartment (usually on two floors) in a larger house and with its own entrance from the outsideverified
Maitre D'nounMWEa dining-room attendant who is in charge of the waiters and the seating of customersverified
Maitre D'hotelnounMWEa dining-room attendant who is in charge of the waiters and the seating of customersverified
Maizenountall annual cereal grass bearing kernels on large ears: widely cultivated in America in many varietiesverified
Majaguanounerect forest tree of Cuba and Jamaica having variably hairy leaves and orange-yellow or orange-red flowersverified
Major Affective DisordernounMWEany mental disorder not caused by detectable organic abnormalities of the brain and in which a major disturbance of emotions is predominantverified
Major ApplicationnounMWEAn application that requires special attention to security due to the risk and magnitude of harm resulting from the loss, misuse, or unauthorized access to or modification of the information in the application. Note: All federal applications require some level of protection. Certain applications, because of the information in them, however, require special management oversight and should be treated as major. Adequate security for other applications should be provided by security of the systems in which they operate.SystemRegulatedCUI
Major Depressive EpisodenounMWE(psychiatry) a state of depression with all the classic symptoms (anhedonia and lethargy and sleep disturbance and despondency and morbid thoughts and feelings of worthlessness and sometimes attempted suicide) but with no known organic dysfunctionverified
Major Diatonic ScalenounMWEa diatonic scale with notes separated by whole tones except for the 3rd and 4th and 7th and 8thverified
Major Information SystemnounMWEAn information system that requires special management attention because of its importance to an agency mission; its high development, operating, or maintenance costs; or its significant role in the administration of agency programs, finances, property, or other resources.SystemRegulatedCUI
Major LobenounMWEthe maximum lobe in the radiation pattern which is intended to be along the forward axis and which gives the effect of a beamverified
Major PlanetnounMWE(astronomy) any of the nine large celestial bodies in the solar system that revolve around the sun and shine by reflected lightverified
Major PremisenounMWEthe premise of a syllogism that contains the major term (which is the predicate of the conclusion)verified
Major PremissnounMWEthe premise of a syllogism that contains the major term (which is the predicate of the conclusion)verified
Major ScalenounMWEa diatonic scale with notes separated by whole tones except for the 3rd and 4th and 7th and 8thverified
Major SurgerynounMWEany surgical procedure that involves anesthesia or respiratory assistanceverified
Major TranquilizernounMWEtranquilizer used to treat psychotic conditions when a calming effect is desiredverified
Major TranquillisernounMWEtranquilizer used to treat psychotic conditions when a calming effect is desiredverified
Major TranquillizernounMWEtranquilizer used to treat psychotic conditions when a calming effect is desiredverified
Major-Generalnouna general officer ranking above a brigadier general and below a lieutenant generalverified
Majoritynounthe property resulting from being or relating to the greater in number of two partsverified
Majority OpinionnounMWEthe opinion joined by a majority of the court, generally known simply as 'the opinion'verified
Majority RulenounMWEthe doctrine that the numerical majority of an organized group can make decisions binding on the whole groupverified