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Glossary · MWE Terms · R

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TermTypeDefinitionClassificationsUpdated
Red MulberrynounMWENorth American mulberry having dark purple edible fruitverifiedMay 18, 2026
Red MulletnounMWEbrightly colored tropical fishes with chin barbelsverifiedMay 18, 2026
Red NoticenounMWEan Interpol notice describing a wanted person and asking that he or she be arrested with a view to extraditionverifiedMay 18, 2026
Red OaknounMWEany of numerous American oaks having 4 stamens in each floret, acorns requiring two years to mature and leaf veins usually extending beyond the leaf margin to form points or bristlesverifiedMay 18, 2026
Red OnionnounMWEflat mild onion having purplish tunicsverifiedMay 18, 2026
Red OsiernounMWEcommon North American shrub with reddish purple twigs and white flowersverifiedMay 18, 2026
Red Osier DogwoodnounMWEcommon North American shrub with reddish purple twigs and white flowersverifiedMay 18, 2026
Red PandanounMWEreddish-brown Old World raccoon-like carnivoreverifiedMay 18, 2026
Red PeppernounMWEground pods and seeds of pungent red peppers of the genus CapsicumverifiedMay 18, 2026
Red PeriwinklenounMWEcommonly cultivated Old World woody herb having large pinkish to red flowersverifiedMay 18, 2026
Red PhalaropenounMWEphalarope of northern oceans and lakesverifiedMay 18, 2026
Red PimpernelnounMWEherb with scarlet or white or purple blossoms that close at approach of rainy weatherverifiedMay 18, 2026
Red PinenounMWEpine of eastern North America having long needles in bunches of two and reddish barkverifiedMay 18, 2026
Red PorgynounMWEfood fish of the Mediterranean and Atlantic coasts of Europe and AmericaverifiedMay 18, 2026
Red RaspberrynounMWEany of several raspberries bearing red fruitverifiedMay 18, 2026
Red Rat SnakenounMWElarge harmless snake of southeastern United StatesverifiedMay 18, 2026
Red RegionnounMWEa place of eternal fire envisaged as punishment for the damnedverifiedMay 18, 2026
Red RockfishnounMWEa large fish of the Pacific coast of North AmericaverifiedMay 18, 2026
Red SalmonnounMWEfatty red flesh of salmon of Pacific coast and riversverifiedMay 18, 2026
Red SandalwoodnounMWEtree of India and East Indies yielding a hard fragrant timber prized for cabinetwork and dark red heartwood used as a dyewoodverifiedMay 18, 2026
Red SandersnounMWEtree of India and East Indies yielding a hard fragrant timber prized for cabinetwork and dark red heartwood used as a dyewoodverifiedMay 18, 2026
Red SanderswoodnounMWEtree of India and East Indies yielding a hard fragrant timber prized for cabinetwork and dark red heartwood used as a dyewoodverifiedMay 18, 2026
Red SaundersnounMWEtree of India and East Indies yielding a hard fragrant timber prized for cabinetwork and dark red heartwood used as a dyewoodverifiedMay 18, 2026
Red ScarenounMWEa period of general fear of communistsverifiedMay 18, 2026
Red SetternounMWEan Irish breed with a chestnut-brown or mahogany-red coatverifiedMay 18, 2026
Red ShiftnounMWEa shift in the electromagnetic radiation of a distant object toward longer wavelengths, the red end of the spectrumverifiedMay 18, 2026
Red Shrubby PenstemonnounMWElow branching dark green shrub with bunches of brick-red flowers at ends of branchesverifiedMay 18, 2026
Red SignalnounMWEAny electronic emission (e.g., plain text, key, key stream, subkey stream, initial fill, or control signal) that would divulge national security information if recovered.verifiedMay 9, 2026
Red Silk CottonnounMWEa plant fiber from the red silk-cotton tree of eastern IndiaverifiedMay 18, 2026
Red Silk-Cotton TreenounMWEEast Indian silk cotton tree yielding fibers inferior to kapokverifiedMay 18, 2026
Red Silver FirnounMWEmedium to tall fir of western North America having a conic crown and branches in tiersverifiedMay 18, 2026
Red SiskinnounMWESouth American species of scarlet finch with black head and wings and tailverifiedMay 18, 2026
Red SnappernounMWEhighly esteemed reddish lean flesh of snapper from Atlantic coast and Gulf of MexicoverifiedMay 18, 2026
Red SorrelnounMWEEast Indian sparsely prickly annual herb or perennial subshrub widely cultivated for its fleshy calyxes used in tarts and jelly and for its bast fiberverifiedMay 18, 2026
Red SpidernounMWEsmall web-spinning miteverifiedMay 18, 2026
Red Spider MitenounMWEsmall web-spinning miteverifiedMay 18, 2026
Red SpritesnounMWEatmospheric electricity (lasting 10 msec) appearing as globular flashes of red (pink to blood-red) light rising to heights of 60 miles (sometimes seen together with elves)verifiedMay 18, 2026
Red SprucenounMWEmedium-sized spruce of eastern North AmericaverifiedMay 18, 2026
Red SquirrelnounMWEcommon reddish-brown squirrel of Europe and parts of AsiaverifiedMay 18, 2026
Red TapenounMWEneedlessly time-consuming procedureverifiedMay 18, 2026
Red TeamnounMWEA group of people authorized and organized to emulate a potential adversary’s attack or exploitation capabilities against an enterprise’s security posture. The Red Team’s objective is to improve enterprise Information Assurance by demonstrating the impacts of successful attacks and by demonstrating what works for the defenders (i.e., the Blue Team) in an operational environment.verifiedAug 30, 2026
Red Team exercisenounMWEAn exercise, reflecting real-world conditions, that is conducted as a simulated adversarial attempt to compromise organizational missions and/or business processes to provide a comprehensive assessment of the security capability of the information system and organization.verifiedAug 30, 2026
Red TidenounMWEseawater that is discolored by large numbers of certain dinoflagellates that produce saxitoxinverifiedMay 18, 2026
Red TrilliumnounMWEtrillium of eastern North America having malodorous pink to purple flowers and an astringent root used in folk medicine especially to ease childbirthverifiedMay 18, 2026
Red UnderwingnounMWEmoth having dull forewings and red-marked hind wingsverifiedMay 18, 2026
red upverbMWEto clean upverifiedJun 3, 2026
Red ValeriannounMWEEuropean herb with small fragrant crimson or white spurred flowersverifiedMay 18, 2026
Red WaternounMWEa disease of cattleverifiedMay 18, 2026
Red WillownounMWEEurasian osier having reddish or purple twigs and bark rich in tanninverifiedMay 18, 2026
Red WinenounMWEwine having a red color derived from skins of dark-colored grapesverifiedMay 18, 2026
Red WolfnounMWEreddish-grey wolf of southwestern North AmericaverifiedMay 18, 2026
Red WormnounMWEterrestrial worm that burrows into and helps aerate soilverifiedMay 18, 2026
Red-Backed LemmingnounMWEOld World lemmingverifiedMay 18, 2026
Red-Backed MousenounMWEany of several voles of mountainous regions of Eurasia and AmericaverifiedMay 18, 2026
Red-Backed SandpipernounMWEsmall common sandpiper that breeds in northern or Arctic regions and winters in southern United States or Mediterranean regionsverifiedMay 18, 2026
Red-Bellied SnakenounMWEharmless woodland snake of southeastern United StatesverifiedMay 18, 2026
Red-Bellied TerrapinnounMWEfreshwater turtle of Chesapeake Bay tributaries having red markings on the lower shellverifiedMay 18, 2026
Red-Bellied TurtlenounMWEfreshwater turtle of Chesapeake Bay tributaries having red markings on the lower shellverifiedMay 18, 2026
Red-Berried EldernounMWEcommon North American shrub or small treeverifiedMay 18, 2026
Red-Breasted MergansernounMWEwidely distributed merganser of America and EuropeverifiedMay 18, 2026
Red-Breasted NuthatchnounMWEbluish-grey nuthatch with reddish breastverifiedMay 18, 2026
Red-Breasted SapsuckernounMWEwestern North American sapsuckerverifiedMay 18, 2026
Red-Breasted SnipenounMWEa dowitcher with a red breastverifiedMay 18, 2026
Red-Eyed VireonounMWEof northern North America having red irises and an olive-grey body with white underpartsverifiedMay 18, 2026
Red-Flowered Silky OaknounMWEtall shrub with cylindrical racemes of red flowers and pinnatifid leaves silky and grey beneathverifiedMay 18, 2026
Red-Green Color BlindnessnounMWEconfusion of red and greenverifiedMay 18, 2026
Red-Green Colour BlindnessnounMWEconfusion of red and greenverifiedMay 18, 2026
Red-Green DichromacynounMWEconfusion of red and greenverifiedMay 18, 2026
Red-Hot PokernounMWEwidely cultivated hybrid poker plantverifiedMay 18, 2026
Red-Lead PuttynounMWEa cement resembling puttyverifiedMay 18, 2026
Red-Legged PartridgenounMWEcommon western European partridge with red legsverifiedMay 18, 2026
Red-Letter DaynounMWEa memorably happy or noteworthy day (from the custom of marking holy days in red on church calendars)verifiedMay 18, 2026
Red-Light DistrictnounMWEa district with many brothelsverifiedMay 18, 2026
Red-Necked GrebenounMWElarge stocky grebe of circumpolar regions having a dark neckverifiedMay 18, 2026
Red-Shafted FlickernounMWEwestern United States bird with red undersurface to wings and tailverifiedMay 18, 2026
Red-Shouldered HawknounMWENorth American hawk with reddish brown shouldersverifiedMay 18, 2026
Red-Skinned OnionnounMWEonion with white to deep red tunicverifiedMay 18, 2026
Red-Spotted PurplenounMWEsimilar to the banded purple but with red spots on underwing surfacesverifiedMay 18, 2026
Red-Tailed HawknounMWEdark brown American hawk species having a reddish-brown tailverifiedMay 18, 2026
Red-Veined Pie PlantnounMWEAsian herb (Himalayas)verifiedMay 18, 2026
Red-Winged BlackbirdnounMWENorth American blackbird with scarlet patches on the wingsverifiedMay 18, 2026
Red/Black ConceptnounMWESeparation of electrical and electronic circuits, components, equipment, and systems that handle unencrypted information (Red), in electrical form, from those that handle encrypted information (Black) in the same form.verifiedMay 9, 2026
Redback VolenounMWEany of several voles of mountainous regions of Eurasia and AmericaverifiedMay 18, 2026
Redbird CactusnounMWElow tropical American shrub having powerful emetic propertiesverifiedMay 18, 2026
Redbird FlowernounMWElow tropical American shrub having powerful emetic propertiesverifiedMay 18, 2026
Redbrick UniversitynounMWE(British informal) a provincial British university of relatively recent foundingverifiedMay 18, 2026
Reddish BluenounMWEa variable color that lies beyond blue in the spectrumverifiedMay 18, 2026
Reddish BrownnounMWEa shade of brown with a tinge of redverifiedMay 18, 2026
Reddish OrangenounMWEan orange color closer to red than to yellowverifiedMay 18, 2026
Reddish PurplenounMWEa shade of purple tinged with redverifiedMay 18, 2026
Redevelopment AuthoritynounMWEa public administrative unit given responsibility for the renovation of blighted urban areasverifiedMay 18, 2026
Redeye FlightnounMWEa night flight from which the passengers emerge with eyes red from lack of sleepverifiedMay 18, 2026
Redfin PickerelnounMWEsmall but gamy pickerel of Atlantic coastal statesverifiedMay 18, 2026
Redheaded WoodpeckernounMWEblack-and-white North American woodpecker having a red head and neckverifiedMay 18, 2026
Redhorse SuckernounMWENorth American sucker with reddish finsverifiedMay 18, 2026
Redirect ExaminationnounMWE(law) questioning of a witness by the party that called the witness after that witness has been subject to cross-examinationverifiedMay 18, 2026
Reduced Instruction Set ComputernounMWE(computer science) a kind of computer architecture that has a relatively small set of computer instructions that it can performverifiedMay 18, 2026
Reducing AgentnounMWEa substance capable of bringing about the reduction of another substance as it itself is oxidizedverifiedMay 18, 2026
Reducing DietnounMWEa diet designed to help you lose weight (especially fat)verifiedMay 18, 2026
Reductio Ad AbsurdumnounMWE(reduction to the absurd) a disproof by showing that the consequences of the proposition are absurdverifiedMay 18, 2026