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Glossary · Nouns · R

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TermTypeDefinitionClassificationsUpdated
Recover FunctionnounMWEDevelop and implement the appropriate activities to maintain plans for resilience and to restore any capabilities or services that were impaired due to a cybersecurity event.ProcessRegulatedMay 9, 2026
Recoverernounsomeone who saves something from danger or violenceverifiedMay 18, 2026
RecoverynounThe phase in the incident response plan that ensures that affected systems or services are restored to a condition specified in the service delivery objectives (SDOs) or business continuity plan (BCP)ProcessMay 12, 2026
Recovery actionnounMWEAn action that is undertaken to return something to a normal state.ProcessMay 9, 2026
recovery plannounMWEThe written expression of a recovery process which consists of defining rules, processes, and disciplines to ensure that the critical business processes will continue to function if there is a failure of one or more of the information processing or telecommunications resources upon which their operations depends. The following are key elements to a disaster recovery plan: 1) Establish a planning group, 2) Perform risk assessment and audits, 3) Establish priorities for applications and networks, 4) Develop recovery strategies, 5) Prepare inventory and documentation of the plan, 6) Develop verification criteria and procedures, 5) Implement the plan.ProcessRegulatedMay 12, 2026
recovery planningnounMWEThe activities undertaken to define a recovery process which consists of defining rules, processes, and disciplines to ensure that the critical business processes will continue to function if there is a failure of one or more of the information processing or telecommunications resources upon which their operations depends.ProcessInternalMay 9, 2026
Recovery point objectivenounMWEThe point in time to which data must be recovered after an outage.MetricMay 12, 2026
Recovery point objective (RPO)nounMWEThe amount of data that can be lost without severely impacting the recovery of operations or the point in time in which systems and data must be recovered (e.g., the date and time of a business disruption).MetricInternalMay 9, 2026
Recovery ProceduresnounMWEActions necessary to restore data files of an information system and computational capability after a system failure.ProcessRegulatedCUIMay 12, 2026
recovery processnounMWEThe steps taken to restore a service, configurable item, etc. to a working state.ProcessMay 9, 2026
Recovery RoomnounMWEa hospital room for the care of patients immediately after surgeryverifiedMay 18, 2026
Recovery service levelsnounMWECollectively, terms that define the speed, quality, and quantity of recovery capability in response to a disaster, including recovery time objective, recovery point objective, timely notification, percentage of normal production service level agreements (SLAs) that will be delivered during recovery mode, etc.RequirementRegulatedMay 9, 2026
Recovery sitenounMWEAn alternate location for processing information (and possibly conducting business) in an emergency. Usually distinguished as "hot" sites that are fully configured centers with compatible computer equipment and "cold" sites that are operational computer centers without the computer equipment.PhysicalInternalMay 9, 2026
recovery strategynounMWEA strategy to resume the minimum set of critical services identified in the business impact analysis (e.g. use of another delivery channel to provide the same service.ProcessInternalMay 12, 2026
Recovery time objectivenounMWEThe overall length of time an information system’s components can be in the recovery phase before negatively impacting the organization’s mission or mission/business functions.MetricMay 12, 2026
Recovery time objective (RTO)nounMWEThe maximum allowable downtime that can occur without severely impacting the recovery of operations or the time in which systems, applications, or business functions must be recovered after an outage (e.g. the point in time that a process can no longer be inoperable).MetricInternalMay 12, 2026
Recovery vendorsnounMWEOrganizations that provide recovery sites and support services for a fee.OrganizationMay 12, 2026
Recreationnounan activity that diverts or amuses or stimulatesverifiedMay 18, 2026
Recreation FacilitynounMWEa public facility for recreationverifiedMay 18, 2026
Recreation RoomnounMWEa room equipped for informal entertainingverifiedMay 18, 2026
Recreational DrugnounMWEa narcotic drug that is used only occasionally and is claimed to be nonaddictiveverifiedMay 18, 2026
Recreational FacilitynounMWEa public facility for recreationverifiedMay 18, 2026
Recreational VehiclenounMWEa motorized wheeled vehicle used for camping or other recreational activitiesverifiedMay 18, 2026
Recriminationnounmutual accusationsverifiedMay 18, 2026
Recrudescencenouna return of something after a period of abatementverifiedMay 18, 2026
Recruiternounan official who enlists personnel for military serviceverifiedMay 18, 2026
Recruiting-Sergeantnouna sergeant deputized to enlist recruitsverifiedMay 18, 2026
Recruitmentnounthe act of getting recruitsverifiedMay 18, 2026
Rectal ArterynounMWEone of the arteries supplying the rectal areaverifiedMay 18, 2026
Rectal ReflexnounMWEnormal response to the presence of feces in the rectumverifiedMay 18, 2026
Rectal VeinnounMWEany of several veins draining the walls of the anal canal and rectumverifiedMay 18, 2026
Rectanglenouna parallelogram with four right anglesverifiedMay 18, 2026
Rectangularitynounthe property of being shaped like a rectangleverifiedMay 18, 2026
RectificationnounAn individual’s right to have personal data about them corrected or amended by a business or other organization if it is inaccurate.RequirementMay 18, 2026
Rectifiernounelectrical device that transforms alternating into direct currentverifiedMay 18, 2026
Rectifying TubenounMWEa thermionic tube having two electrodesverifiedMay 18, 2026
Rectifying ValvenounMWEa thermionic tube having two electrodesverifiedMay 18, 2026
Rectilinear RegressionnounMWEthe relation between variables when the regression equation is linear: e.g., y = ax + bverifiedMay 18, 2026
Rectitudenounrighteousness as a consequence of being honorable and honestverifiedMay 18, 2026
Rectonounright-hand pageverifiedMay 18, 2026
Rectocelenounprotrusion or herniation of the rectum into the vaginaverifiedMay 18, 2026
Rectoplastynounreconstructive surgery of the anus or rectumverifiedMay 18, 2026
Rectornouna person authorized to conduct religious worshipverifiedMay 18, 2026
Rectoratenounthe office or station of a rectorverifiedMay 18, 2026
Rectorshipnounthe office or station of a rectorverifiedMay 18, 2026
Rectorynounan official residence provided by a church for its parson or vicar or rectorverifiedMay 18, 2026
Rectumnounthe terminal section of the alimentary canalverifiedMay 18, 2026
Rectusnounany of various straight musclesverifiedMay 18, 2026
Rectus InferiornounMWEthe ocular muscle whose contraction turns the eyeball down and mediallyverifiedMay 18, 2026
Rectus LateralisnounMWEthe ocular muscle whose contraction turns the eyeball outwardverifiedMay 18, 2026
Rectus MedialisnounMWEthe ocular muscle whose contraction turns the eyeball mediallyverifiedMay 18, 2026
Rectus SuperiornounMWEthe ocular muscle whose contraction turns the eyeball upward and mediallyverifiedMay 18, 2026
Recuperationnoungradual healing (through rest) after sickness or injuryverifiedMay 18, 2026
Recurrencenounhappening again (especially at regular intervals)verifiedMay 18, 2026
Recurrent EventnounMWEan event that recurs at intervalsverifiedMay 18, 2026
Recurrent FevernounMWEmarked by recurring high fever and transmitted by the bite of infected lice or ticksverifiedMay 18, 2026
Recurring DecimalnounMWEa decimal with a sequence of digits that repeats itself indefinitelyverifiedMay 18, 2026
Recursionnoun(mathematics) an expression such that each term is generated by repeating a particular mathematical operationverifiedMay 18, 2026
Recursive DefinitionnounMWE(mathematics) a definition of a function from which values of the function can be calculated in a finite number of stepsverifiedMay 18, 2026
Recursive RoutinenounMWEa routine that can call itselfverifiedMay 18, 2026
Recusalnoun(law) the disqualification of a judge or jury by reason of prejudice or conflict of interestverifiedMay 18, 2026
Recusancynounrefusal to submit to established authorityverifiedMay 18, 2026
Recusationnoun(law) the disqualification of a judge or jury by reason of prejudice or conflict of interestverifiedMay 18, 2026
Recyclingnounthe act of processing used or abandoned materials for use in creating new productsverifiedMay 18, 2026
Recycling BinnounMWEa bin for depositing things to be recycledverifiedMay 18, 2026
Recycling PlantnounMWEa plant for reprocessing used or abandoned materialsverifiedMay 18, 2026
REDnounIn cryptographic systems, refers to information or messages that contain sensitive or classified information that is not encrypted. See also BLACK.DataMay 9, 2026
Red AdmiralnounMWEof temperate Europe and AsiaverifiedMay 18, 2026
Red AlertnounMWEthe highest level of alert when an attack by the enemy seems imminent (or more generally a state of alert resulting from imminent danger)verifiedMay 18, 2026
Red AlgaenounMWEmarine algae in which the chlorophyll is masked by a red or purplish pigmentverifiedMay 18, 2026
Red AmaranthnounMWEtall showy tropical American annual having hairy stems and long spikes of usually red flowers above leaves deeply flushed with purpleverifiedMay 18, 2026
Red Angel's TrumpetnounMWEarborescent South American shrub having very large orange-red flowersverifiedMay 18, 2026
Red AshnounMWEsmallish American tree with velvety branchlets and lower leaf surfacesverifiedMay 18, 2026
Red BaneberrynounMWENorth American perennial herb with alternately compound leaves and racemes of small white flowers followed by bright red oval poisonous berriesverifiedMay 18, 2026
Red BaynounMWEsmall tree of southern United States having dark red heartwoodverifiedMay 18, 2026
Red BearberrynounMWEevergreen mat-forming shrub of North America and northern Eurasia having small white flowers and red berriesverifiedMay 18, 2026
Red BeechnounMWENorth American forest tree with light green leaves and edible nutsverifiedMay 18, 2026
Red BirchnounMWEbirch of swamps and river bottoms throughout the eastern United States having reddish-brown barkverifiedMay 18, 2026
Red Bird's EyenounMWEbiennial European catchfly having red or pink flowersverifiedMay 18, 2026
Red Bone MarrownounMWEbone marrow of children and some adult bones that is required for the formation of red blood cellsverifiedMay 18, 2026
Red BordeauxnounMWEdry red Bordeaux or Bordeaux-like wineverifiedMay 18, 2026
Red BryonynounMWEbryony having fleshy roots pale green flowers and very small red berriesverifiedMay 18, 2026
Red BuckeyenounMWEa shrub buckeye of southern United StatesverifiedMay 18, 2026
Red CabbagenounMWEcabbage plant with a compact head of reddish purple leavesverifiedMay 18, 2026
Red CampionnounMWEbiennial European catchfly having red or pink flowersverifiedMay 18, 2026
Red CarpetnounMWEa strip of red carpeting laid down for dignitaries to walk onverifiedMay 18, 2026
Red CedarnounMWEsmall juniper found east of Rocky Mountains having a conic crown, brown bark that peels in shreds, and small sharp needlesverifiedMay 18, 2026
Red CentnounMWEsomething of little valueverifiedMay 18, 2026
Red ClaynounMWEclay whose redness results from iron oxideverifiedMay 18, 2026
Red ClovernounMWEerect to decumbent short-lived perennial having red-purple to pink flowersverifiedMay 18, 2026
Red ColenounMWEcoarse Eurasian plant cultivated for its thick white pungent rootverifiedMay 18, 2026
Red CoralnounMWEthe hard stony skeleton of a Mediterranean coral that has a delicate red or pink color and is used for jewelryverifiedMay 18, 2026
Red CurrantnounMWEcultivated European current bearing small edible red berriesverifiedMay 18, 2026
Red Cypress PinenounMWEAustralian tree with small flattened scales as leaves and numerous dark brown seedverifiedMay 18, 2026
Red DagganounMWErelatively nontoxic South African herb smoked like tobaccoverifiedMay 18, 2026
Red DeernounMWEcommon deer of temperate Europe and AsiaverifiedMay 18, 2026
Red DevilnounMWEbarbiturate that is a white odorless slightly bitter powder (trade name Seconal) used as a sodium salt for sedation and to treat convulsionsverifiedMay 18, 2026
Red DogwoodnounMWEEuropean deciduous shrub turning red in autumn having dull white flowersverifiedMay 18, 2026
Red DrumnounMWElarge edible fish found off coast of United States from Massachusetts to MexicoverifiedMay 18, 2026
Red DwarfnounMWEa small, old, relatively cool starverifiedMay 18, 2026