Glossary · Nouns · R
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TermTypeDefinitionClassificationsUpdated
Red-Letter DaynounMWEa memorably happy or noteworthy day (from the custom of marking holy days in red on church calendars)verified
Red-Shafted FlickernounMWEwestern United States bird with red undersurface to wings and tailverified
Red-Spotted PurplenounMWEsimilar to the banded purple but with red spots on underwing surfacesverified
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.ControlRegulatedCUI
Redactionnounputting something, such as a literary work or a legislative bill, into acceptable formverified
Redbellynounfreshwater turtle of Chesapeake Bay tributaries having red markings on the lower shellverified
RedberrynounNorth American perennial herb with alternately compound leaves and racemes of small white flowers followed by bright red oval poisonous berriesverified
Redbrick UniversitynounMWE(British informal) a provincial British university of relatively recent foundingverified
Redbudnounsmall shrubby tree of eastern North America similar to the Judas tree having usually pink flowersverified
Redbugnounlarval mite that sucks the blood of vertebrates including human beings causing intense irritationverified
Redeemernounsomeone who redeems or buys back (promissory notes or merchandise or commercial paper etc.)verified
Redemptionnounrepayment of the principal amount of a debt or security at or before maturity (as when a corporation repurchases its own stock)verified
Redeploymentnounthe withdrawal and redistribution of forces in an attempt to use them more effectivelyverified
Redevelopment AuthoritynounMWEa public administrative unit given responsibility for the renovation of blighted urban areasverified
Redeye FlightnounMWEa night flight from which the passengers emerge with eyes red from lack of sleepverified
Redheaded WoodpeckernounMWEblack-and-white North American woodpecker having a red head and neckverified
Redirect ExaminationnounMWE(law) questioning of a witness by the party that called the witness after that witness has been subject to cross-examinationverified
Redispositionnounthe withdrawal and redistribution of forces in an attempt to use them more effectivelyverified
Redoxnouna reversible chemical reaction in which one reaction is an oxidation and the reverse is a reductionverified
Redraftnouna draft for the amount of a dishonored draft plus the costs and charges of drafting againverified
Redrootnounperennial woodland native of North America having a red root and red sap and bearing a solitary lobed leaf and white flower in early spring and having acrid emetic propertiesverified
Redstartnounflycatching warbler of eastern North America the male having bright orange on sides and wings and tailverified
Reduced Instruction Set ComputernounMWE(computer science) a kind of computer architecture that has a relatively small set of computer instructions that it can performverified
Reducernouna substance capable of bringing about the reduction of another substance as it itself is oxidizedverified
Reducingnounany process in which electrons are added to an atom or ion (as by removing oxygen or adding hydrogen)verified
Reducing AgentnounMWEa substance capable of bringing about the reduction of another substance as it itself is oxidizedverified
Reductantnouna substance capable of bringing about the reduction of another substance as it itself is oxidizedverified
Reductionoun(reduction to the absurd) a disproof by showing that the consequences of the proposition are absurdverified
Reductio Ad AbsurdumnounMWE(reduction to the absurd) a disproof by showing that the consequences of the proposition are absurdverified
Reductionnounany process in which electrons are added to an atom or ion, as by removing oxygen or adding hydrogenverified
Reduction DivisionnounMWE(genetics) cell division that produces reproductive cells in sexually reproducing organismsverified
Reductionismnouna theory that all complex systems can be completely understood in terms of their componentsverified
Reductivismnounan art movement in sculpture and painting that began in the 1950s and emphasized extreme simplification of form and colorverified
redundancynounAdditional or alternative systems, sub-systems, assets, or processes that maintain a degree of overall functionality in case of loss or failure of another system, sub-system, asset, or process.Control
Redundant array of independent disks (RAID)nounMWEThe use of multiple hard disks to store the same data in different places. By placing data on multiple disks, I/O operations can overlap in a balanced way, improving performance. Since multiple disks increase the mean time between failures (MTBF), storing data redundantly also increases fault-tolerance.System
Redundant sitenounMWEA recovery strategy involving the duplication of key IT components, including data or other key business processes, whereby fast recovery can take placeControl
Reduplicationnouna word formed by or containing a repeated syllable or speech sound (usually at the beginning of the word)verified
Redwood PenstemonnounMWElow branching dark green shrub with bunches of brick-red flowers at ends of branchesverified
Reednouna vibrator consisting of a thin strip of stiff material that vibrates to produce a tone when air streams over itverified
Reed GrassnounMWEany of various tall perennial grasses of the genus Calamagrostis having feathery plumesverified