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Glossary · Nouns · R

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TermTypeDefinitionClassificationsUpdated
Reproductive MemorynounMWErecall that is hypothesized to work by storing the original stimulus input and reproducing it during recallverifiedMay 18, 2026
Reproductive OrgannounMWEany organ involved in sexual reproductionverifiedMay 18, 2026
Reproductive StructurenounMWEthe parts of a plant involved in its reproductionverifiedMay 18, 2026
Reproductive SystemnounMWEorgans and tissues involved in the production and maturation of gametes and in their union and subsequent development as offspringverifiedMay 18, 2026
Reprovalnounan act or expression of criticism and censureverifiedMay 18, 2026
Reprovernounsomeone who finds fault or imputes blameverifiedMay 18, 2026
Reptilenounany cold-blooded vertebrate of the class Reptilia including tortoises, turtles, snakes, lizards, alligators, crocodiles, and extinct formsverifiedMay 18, 2026
Reptile FamilynounMWEa family of reptilesverifiedMay 18, 2026
Reptile GenusnounMWEa genus of reptilesverifiedMay 18, 2026
Republicnouna political system in which the supreme power lies in a body of citizens who can elect people to represent themverifiedMay 18, 2026
Republicanismnounthe political orientation of those who hold that a republic is the best form of governmentverifiedMay 18, 2026
Republicationnounsomething that has been published againverifiedMay 18, 2026
Republishingnounthe act of publishing againverifiedMay 18, 2026
RepudiationnounThe denial by one of the parties to a transaction of participation in all or part of that transaction or of the content of the communication.RequirementMay 12, 2026
Repugnancenounthe relation between propositions that cannot both be true at the same timeverifiedMay 18, 2026
Repulsionnounthe act of repulsing or repelling an attackverifiedMay 18, 2026
Repulsive ForcenounMWEthe force by which bodies repel one anotherverifiedMay 18, 2026
Repulsivenessnounthe quality of being disgusting to the senses or emotionsverifiedMay 18, 2026
Reputabilitynounhonorableness by virtue of being respectable and having a good reputationverifiedMay 18, 2026
reputationnounThe beliefs, opinion, or social evaluation of the public about someone or something.MetricMay 9, 2026
requestnounExpress the need or desire for; ask for.EventMay 9, 2026
Request for CommentnounMWEA series of notes about the Internet, started in 1969 (when the Internet was the ARPANET). An Internet Document can be submitted to the IETF by anyone, but the IETF decides if the document becomes an RFC. Eventually, if it gains enough interest, it may evolve into an Internet standard.ArtifactPublicPublicInfoMay 12, 2026
Requesternounone praying humbly for somethingverifiedMay 18, 2026
Requiemnouna song or hymn of mourning composed or performed as a memorial to a dead personverifiedMay 18, 2026
Requiem SharknounMWEany of numerous sharks from small relatively harmless bottom-dwellers to large dangerous oceanic and coastal speciesverifiedMay 18, 2026
Requiescatnouna prayer for the repose of the soul of a dead personverifiedMay 18, 2026
Required CoursenounMWEa course that all students are required to takeverifiedMay 18, 2026
requirementnounA formal statement of a necessary condition; something needed.RequirementMay 9, 2026
Requirements ContractnounMWEa contract in which you agree to purchase all your requirements of a particular sort from one partyverifiedMay 18, 2026
Requisitenessnounthe state of being absolutely requiredverifiedMay 18, 2026
Requisition FormnounMWEan official form on which a request in madeverifiedMay 18, 2026
Requitalnouna justly deserved penaltyverifiedMay 18, 2026
Rerebracenouncannon that provides plate armor for the upper armverifiedMay 18, 2026
Reredosnouna painted or carved screen placed above and behind an altar or communion tableverifiedMay 18, 2026
Res AdjudicatanounMWEa matter already settled in courtverifiedMay 18, 2026
Res GestaenounMWErule of evidence that covers words that are so closely associated with an occurrence that the words are considered part of the occurrence and as such their report does not violate the hearsay ruleverifiedMay 18, 2026
Res Ipsa LoquiturnounMWEa rule of evidence whereby the negligence of an alleged wrongdoer can be inferred from the fact that the accident happenedverifiedMay 18, 2026
Res JudicatanounMWEa matter already settled in courtverifiedMay 18, 2026
Res PublicanounMWEa politically organized body of people under a single governmentverifiedMay 18, 2026
Resalenounthe selling of something purchasedverifiedMay 18, 2026
Rescissionnoun(law) the act of rescindingverifiedMay 18, 2026
Rescriptnouna legally binding command or decision entered on the court record (as if issued by a court or judge)verifiedMay 18, 2026
Rescue EquipmentnounMWEequipment used to rescue passengers in case of emergencyverifiedMay 18, 2026
Rescue OperationnounMWEan operation organized to free from danger or confinementverifiedMay 18, 2026
Rescue PartynounMWEa party of rescuersverifiedMay 18, 2026
Rescuernounsomeone who saves something from danger or violenceverifiedMay 18, 2026
Research CenternounMWEa center where research is doneverifiedMay 18, 2026
Research ColloquiumnounMWEa colloquium at which the results of (scientific) research are reportedverifiedMay 18, 2026
Research DirectornounMWEa supervisor in a research centerverifiedMay 18, 2026
Research FacilitynounMWEa center where research is doneverifiedMay 18, 2026
Research LabnounMWEa workplace for the conduct of scientific researchverifiedMay 18, 2026
Research LaboratorynounMWEa workplace for the conduct of scientific researchverifiedMay 18, 2026
Research ProjectnounMWEresearch into questions posed by scientific theories and hypothesesverifiedMay 18, 2026
Research RocketnounMWEa rocket fired for test purposesverifiedMay 18, 2026
Research StaffnounMWEa group of associated research workers in a university or library or laboratoryverifiedMay 18, 2026
Research WorkernounMWEa scientist who devotes himself to doing researchverifiedMay 18, 2026
Researchernouna scientist who devotes himself to doing researchverifiedMay 18, 2026
Reseaunouna network of fine lines used by astronomers as a reference for measurements on star photographsverifiedMay 18, 2026
Resectionnounsurgical removal of part of a structure or organverifiedMay 18, 2026
Resedanounany plant of the genus ResedaverifiedMay 18, 2026
Resemblancenounsimilarity in appearance or external or superficial detailsverifiedMay 18, 2026
Resentmentnouna feeling of deep and bitter anger and ill-willverifiedMay 18, 2026
Reserpinenounantihypertensive consisting of an alkaloid extracted from the plant Rauwolfia serpentina (trade names Raudixin or Rau-Sed or Sandril or Serpasil)verifiedMay 18, 2026
Reservationnounthe written record or promise of an arrangement by which accommodations are secured in advanceverifiedMay 18, 2026
Reserve accountnounMWEA non-interest-earning balance account institutions maintain with the Federal Reserve Bank or with a correspondent bank to satisfy the Federal Reserve's reserve requirements. Reserve account balances play a central role in the exchange of funds between depository institutions.DataMay 12, 2026
Reserve AssetsnounMWEcapital held back from investment in order to meet probable or possible demandsverifiedMay 18, 2026
Reserve BanknounMWEone of 12 regional banks that monitor and act as depositories for banks in their regionverifiedMay 18, 2026
Reserve ClausenounMWEa clause that used to be part of the contract with a professional athlete extending the contract for a year beyond its expirationverifiedMay 18, 2026
Reserve FundnounMWEfunds taken out of earnings to provide for anticipated future paymentsverifiedMay 18, 2026
Reserve Keying MaterialnounMWEKey held to satisfy unplanned needs. See Contingency Key.CredentialRegulatedCUIMay 9, 2026
Reserve requirementsnounMWEThe percentage of deposits that a depository institution may not lend out or invest and must hold either as vault cash or on deposit at a Federal Reserve Bank. Reserve requirements affect the potential of the banking system to create transaction deposits.RequirementRegulatedMay 9, 2026
Reservistnouna member of a military reserveverifiedMay 18, 2026
Reservoirnounanything (a person or animal or plant or substance) in which an infectious agent normally lives and multipliesverifiedMay 18, 2026
Reset ButtonnounMWEa push button that you press to activate the reset mechanismverifiedMay 18, 2026
Resettlementnounthe transportation of people (as a family or colony) to a new settlement (as after an upheaval of some kind)verifiedMay 18, 2026
Reshnounthe 20th letter of the Hebrew alphabetverifiedMay 18, 2026
Reshipmentnounthe act of shipping again (especially by transferring to another ship)verifiedMay 18, 2026
Reshufflingnounshuffling againverifiedMay 18, 2026
Residnounoil products that remain after petroleum has been distilledverifiedMay 18, 2026
residencenounA person’s home; the place where someone lives.PhysicalMay 12, 2026
Residence HallnounMWEa college or university building containing living quarters for studentsverifiedMay 18, 2026
Residence TimenounMWEthe period of time spent in a particular placeverifiedMay 18, 2026
Residencynounthe position of physician who is receiving special training in a hospital (usually after completing an internship)verifiedMay 18, 2026
Resident CommissionernounMWEthe representative of Puerto Rico in the United States House of RepresentativesverifiedMay 18, 2026
Resident PhysiciannounMWEa physician (especially an intern) who lives in a hospital and cares for hospitalized patients under the supervision of the medical staff of the hospitalverifiedMay 18, 2026
Residential AreanounMWEa district where people liveverifiedMay 18, 2026
Residential DistrictnounMWEa district where people liveverifiedMay 18, 2026
ResidualnounResiduals are differences between the one-step-predicted output from the model and the measured output from the validation data set. Thus, residuals represent the portion of the validation data not explained by the model.MetricMay 18, 2026
Residual ClaynounMWEthe soil that is remaining after the soluble elements have been dissolvedverifiedMay 18, 2026
Residual OilnounMWEoil products that remain after petroleum has been distilledverifiedMay 18, 2026
Residual risknounMWEThe remaining potential risk after all IT security measures are applied. There is a residual risk associated with each threat.MetricMay 9, 2026
Residual SoilnounMWEthe soil that is remaining after the soluble elements have been dissolvedverifiedMay 18, 2026
ResiduenounData left in storage after information-processing operations are complete, but before degaussing or overwriting has taken place.DataMay 12, 2026
Residuumnounsomething left after other parts have been taken awayverifiedMay 18, 2026
Resignationnounthe act of giving up something, such as a claim, office, or possessionverifiedMay 18, 2026
resiliencenounThe ability to quickly adapt and recover from any known or unknown changes to the environment through holistic implementation of risk management, contingency, and continuity planning.CapabilityMay 12, 2026
resilience by designnounMWEThe embedding of security in technology and system development from the earliest stages of conceptualisation and design.RequirementRegulatedMay 9, 2026
Resilience testingnounMWETesting of an institution's business continuity and disaster recovery resumption plans.ProcessInternalMay 12, 2026
Resiliencynounthe physical property of a material that can return to its original shape or position after deformation that does not exceed its elastic limitverifiedMay 18, 2026
Resinnounany of a class of solid or semisolid viscous substances obtained either as exudations from certain plants or prepared by polymerization of simple moleculesverifiedMay 18, 2026