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Glossary · Nouns · R

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TermTypeDefinitionClassificationsUpdated
Receptionistnounan employee whose main duty is to answer the telephone and receive visitors, typically located behind the front deskverifiedMay 18, 2026
Receptive AphasianounMWEaphasia characterized by fluent but meaningless speech and severe impairment of the ability understand spoken or written wordsverifiedMay 18, 2026
Receptivenessnounwillingness or readiness to receive, especially impressions or ideasverifiedMay 18, 2026
Receptivitynounwillingness or readiness to receive (especially impressions or ideas)verifiedMay 18, 2026
Receptornouna cellular structure that is postulated to exist in order to mediate between a chemical agent that acts on nervous tissue and the physiological responseverifiedMay 18, 2026
Recessionnounthe withdrawal of the clergy and choir from the chancel to the vestry at the end of a church serviceverifiedMay 18, 2026
Recessional MarchnounMWEa march to be played for processionsverifiedMay 18, 2026
Recessive AllelenounMWEan allele that produces its characteristic phenotype only when its paired allele is identicalverifiedMay 18, 2026
Recessive GenenounMWEgene that produces its characteristic phenotype only when its allele is identicalverifiedMay 18, 2026
Rechauffenounwarmed leftoversverifiedMay 18, 2026
Rechewed FoodnounMWEfood of a ruminant regurgitated to be chewed againverifiedMay 18, 2026
Recidivismnounhabitual relapse into crimeverifiedMay 18, 2026
Recidivistnounsomeone who is repeatedly arrested for criminal behavior (especially for the same criminal behavior)verifiedMay 18, 2026
Recipenoundirections for making somethingverifiedMay 18, 2026
Recipientnounthe semantic role of the animate entity that is passively involved in the happening denoted by the verb in the clauseverifiedMay 18, 2026
Recipient RolenounMWEthe semantic role of the animate entity that is passively involved in the happening denoted by the verb in the clauseverifiedMay 18, 2026
Recipient Usage PeriodnounMWEThe period of time during the cryptoperiod of a symmetric key when protected information is processed.MetricRegulatedMay 12, 2026
Reciprocal agreementnounMWEAn agreement whereby two organizations with similar computer systems agree to provide computer processing time for the other in the event one of the systems is rendered inoperable. Processing time may be provided on a "best effort" or as "time available" basis; therefore, reciprocal agreements are not usually acceptable as a primary recovery option.RequirementInternalMay 12, 2026
Reciprocal CrossnounMWEhybridization involving a pair of crosses that reverse the sexes associated with each genotypeverifiedMay 18, 2026
Reciprocal InhibitionnounMWEa method of behavior therapy based on the inhibition of one response by the occurrence of another response that is mutually incompatible with itverifiedMay 18, 2026
Reciprocal OhmnounMWEa unit of conductance equal to the reciprocal of an ohmverifiedMay 18, 2026
Reciprocal PronounnounMWEa pronoun or pronominal phrase (as `each other') that expresses a mutual action or relationship between the individuals indicated in the plural subjectverifiedMay 18, 2026
Reciprocal-Inhibition TherapynounMWEa method of behavior therapy based on the inhibition of one response by the occurrence of another response that is mutually incompatible with itverifiedMay 18, 2026
Reciprocalitynouna relation of mutual dependence or action or influenceverifiedMay 18, 2026
Reciprocating EnginenounMWEan internal-combustion engine in which the crankshaft is turned by pistons moving up and down in cylindersverifiedMay 18, 2026
Reciprocating SawnounMWEa portable power saw with a reciprocating bladeverifiedMay 18, 2026
Reciprocationnounthe act of making or doing something in returnverifiedMay 18, 2026
ReciprocitynounMutual agreement among participating organizations to accept each other’s security assessments in order to reuse information system resources and/or to accept each other’s assessed security posture in order to share information.ProcessMay 12, 2026
Recirculationnouncirculation againverifiedMay 18, 2026
Recissionnoun(law) the act of rescindingverifiedMay 18, 2026
Recitalnouna public instance of reciting or repeating (from memory) something prepared in advanceverifiedMay 18, 2026
Recitalistnouna musician who gives recitalsverifiedMay 18, 2026
Recitationnouna public instance of reciting or repeating (from memory) something prepared in advanceverifiedMay 18, 2026
Recitativenouna vocal passage of narrative text that a singer delivers with natural rhythms of speechverifiedMay 18, 2026
Reciternounsomeone who recites from memoryverifiedMay 18, 2026
Recklessnessnounthe trait of giving little thought to dangerverifiedMay 18, 2026
Reckonernounan expert at calculation (or at operating calculating machines)verifiedMay 18, 2026
Reckoningnounproblem solving that involves numbers or quantitiesverifiedMay 18, 2026
Reclamationnounthe conversion of wasteland into land suitable for use of habitation or cultivationverifiedMay 18, 2026
Reclassificationnounclassifying something again (usually in a new category)verifiedMay 18, 2026
Reclinernounan armchair whose back can be lowered and foot can be raised to allow the sitter to recline in itverifiedMay 18, 2026
Recliningnounthe act of assuming or maintaining a reclining positionverifiedMay 18, 2026
Reclining ChairnounMWEan armchair whose back can be lowered and foot can be raised to allow the sitter to recline in itverifiedMay 18, 2026
Reclusivenessnouna disposition to prefer seclusion or isolationverifiedMay 18, 2026
Recodingnounconverting from one code to anotherverifiedMay 18, 2026
Recognisancenoun(law) a security entered into before a court with a condition to perform some act required by lawverifiedMay 18, 2026
Recognitionnounthe automatic discovery of regularities in data through the use of computer algorithms and with the use of these regularities to take actions such as classifying the data into different categories.CapabilityMay 18, 2026
Recognizancenoun(law) a security entered into before a court with a condition to perform some act required by lawverifiedMay 18, 2026
Recollectionnounthe process of remembering (especially the process of recovering information by mental effort)verifiedMay 18, 2026
Recombinant Deoxyribonucleic AcidnounMWEgenetically engineered DNA made by recombining fragments of DNA from different organismsverifiedMay 18, 2026
Recombinant DnanounMWEgenetically engineered DNA made by recombining fragments of DNA from different organismsverifiedMay 18, 2026
Recombinant Dna TechnologynounMWEthe technology of preparing recombinant DNA in vitro by cutting up DNA molecules and splicing together fragments from more than one organismverifiedMay 18, 2026
Recombinant Human InsulinnounMWEa form of insulin (trade name Humulin) made from recombinant DNA that is identical to human insulinverifiedMay 18, 2026
Recombinant ProteinnounMWEa protein derived from recombinant DNAverifiedMay 18, 2026
Recombinationnoun(physics) a combining of charges or transfer of electrons in a gas that results in the neutralization of ionsverifiedMay 18, 2026
Recommencementnounbeginning againverifiedMay 18, 2026
recommendationnounA proposal for the best course of action.FindingMay 12, 2026
Recommendation SystemnounMWEA subclass of information filtering system that seek to predict ‘rating’ or ‘preference’ that a user would give to an item (such as music, books or movies) or social element (e.g. people or group) they had not yet considered, using a model built from the characteristics of an item (content based approaches) or the user’s social environment (collaborative filtering approaches)SystemPIIMay 18, 2026
reconcilementnounThe purpose of this task is to reestablish a close relationship or to settle or resolve something.ProcessInternalMay 12, 2026
Reconcilernounsomeone who tries to bring peaceverifiedMay 18, 2026
Reconciliationnounthe reestablishing of cordial relationsverifiedMay 18, 2026
Reconditenessnounthe quality of being unclear or abstruse and hard to understandverifiedMay 18, 2026
ReconnaissancenounReconnaissance is the phase of an attack where an attackers finds new systems, maps out networks, and probes for specific, exploitable vulnerabilities.ThreatMay 9, 2026
Reconnaissance by FirenounMWEa method of reconnaissance in which fire is placed on a suspected enemy position in order to cause the enemy to disclose his presence by moving or returning fireverifiedMay 18, 2026
Reconnaissance in ForcenounMWEan offensive operation designed to discover or test the enemy's strength (or to obtain other information)verifiedMay 18, 2026
Reconnaissance MissionnounMWEthe act of reconnoitring (especially to gain information about an enemy or potential enemy)verifiedMay 18, 2026
Reconnaissance PlanenounMWEa military airplane used to gain information about an enemyverifiedMay 18, 2026
Reconnaissance VehiclenounMWEfast armored military vehicle with four-wheel drive and open topverifiedMay 18, 2026
Reconnoiteringnounexploring in order to gain informationverifiedMay 18, 2026
Reconnoitringnounexploring in order to gain informationverifiedMay 18, 2026
Reconsiderationnouna consideration of a topic (as in a meeting) with a view to changing an earlier decisionverifiedMay 18, 2026
Reconstructionnounrecall that is hypothesized to work by storing abstract features which are then used to construct the memory during recallverifiedMay 18, 2026
Reconstructive MemorynounMWErecall that is hypothesized to work by storing abstract features which are then used to construct the memory during recallverifiedMay 18, 2026
Reconstructive SurgerynounMWEsurgery concerned with therapeutic or cosmetic reformation of tissueverifiedMay 18, 2026
Reconverting bank (Check 21)nounMWEThe financial institution that creates a substitute check. With respect to a substitute check that was created by a person that is not a financial institution, the reconverting bank is the first financial institution that transfers, presents, or returns that substitute check or, in lieu thereof, the first paper or electronic representation of that substitute check. The reconverting bank warrants that (1) the substitute check is the legal equivalent of the original check; and (2) the original check cannot be presented again in any form so the customer pays the check only once.OrganizationRegulatedMay 9, 2026
recordnounAnything that is put down in permanent form and preserved as evidence.ArtifactMay 9, 2026
Record AlbumnounMWEan album for holding phonograph recordsverifiedMay 18, 2026
Record BooknounMWEa compilation of the known facts regarding something or someoneverifiedMay 18, 2026
Record ChangernounMWEan automatic mechanical device on a record player that causes new records to be played without manual interventionverifiedMay 18, 2026
Record CompanynounMWEa company that makes and sells musical recordingsverifiedMay 18, 2026
Record CovernounMWEa sleeve for storing a phonograph recordverifiedMay 18, 2026
Record HopnounMWEan informal dance where popular music is playedverifiedMay 18, 2026
Record JacketnounMWEthe jacket for a phonograph recordverifiedMay 18, 2026
Record PlayernounMWEmachine in which rotating records cause a stylus to vibrate and the vibrations are amplified acoustically or electronicallyverifiedMay 18, 2026
Record SleevenounMWEa sleeve for storing a phonograph recordverifiedMay 18, 2026
Record-Breakernounsomeone who breaks a recordverifiedMay 18, 2026
Record-Holdernounsomeone who breaks a recordverifiedMay 18, 2026
Record-Keepernounsomeone responsible for keeping recordsverifiedMay 18, 2026
Recordernouna barrister or solicitor who serves as part-time judge in towns or boroughsverifiedMay 18, 2026
Recorder PlayernounMWEsomeone who plays the recorderverifiedMay 18, 2026
Recordingnouna signal that encodes something (e.g., picture or sound) that has been recordedverifiedMay 18, 2026
Recording EquipmentnounMWEequipment for making recordsverifiedMay 18, 2026
Recording LabelnounMWEtrade name of a company that produces musical recordingsverifiedMay 18, 2026
Recording MachinenounMWEequipment for making recordsverifiedMay 18, 2026
Recording StudionounMWEstudio where tapes and records are recordedverifiedMay 18, 2026
Recording SystemnounMWEaudio system for recoding soundverifiedMay 18, 2026
Records ManagementnounMWEThe process for tagging information for records-keeping requirements as mandated in the Federal Records Act and the National Archival and Records Requirements.ProcessRegulatedCUIMay 9, 2026
records management procedurenounMWEA detailed description of the steps necessary to systematically and administratively control records throughout their life cycle in conformance with applicable standards.RequirementMay 9, 2026
Recountingnounan act of narrationverifiedMay 18, 2026
recoursenounThe legal right to demand compensation or payment.RequirementMay 9, 2026