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Glossary · Nouns · R

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TermTypeDefinitionClassificationsUpdated
Retrospectionnounmemory for experiences that are pastverifiedMay 18, 2026
Retroversionnouna turning or tilting backward of an organ or body partverifiedMay 18, 2026
Retrovirusnounany of a group of viruses that contain two single-strand linear RNA molecules per virion and reverse transcriptase (RNA to DNA)verifiedMay 18, 2026
Retrovisionnouna vision of events in the distant pastverifiedMay 18, 2026
RetsinanounGreek wine flavored with resinverifiedMay 18, 2026
Return (ACH)nounMWEAny ACH entry that has been returned to the ODFI by the RDFI or by the ACH operator because it cannot be processed. The reason for each return is included with the return in the form of a "return reason code." (See the NACHA "Operating Rules and Guidelines" for a complete reason code listing.)ArtifactRegulatedPCIMay 9, 2026
Return AddressnounMWEthe address of the sender of a letter or parcel indicating where it should be returned if it cannot be deliveredverifiedMay 18, 2026
Return KeynounMWEthe key on electric typewriters or computer keyboards that causes a carriage return and a line feedverifiedMay 18, 2026
Return on Invested CapitalnounMWE(corporate finance) the amount, expressed as a percentage, that is earned on a company's total capital calculated by dividing the total capital into earnings before interest, taxes, or dividends are paidverifiedMay 18, 2026
Return on investmentnounMWEA measure of operating performance and efficiency, computed in its simplest form by dividing net income by the total investment over the period being consideredMetricMay 12, 2026
Return TicketnounMWEa ticket to a place and back, usually over the same routeverifiedMay 18, 2026
Return-oriented attacksnounMWEAn exploit technique in which the attacker uses control of the call stack to indirectly execute cherry-picked machine instructions immediately prior to the return instruction in subroutines within the existing program codeThreatMay 9, 2026
Returning OfficernounMWEthe official in each electorate who holds the election and returns the resultsverifiedMay 18, 2026
Reubennouna hot sandwich with corned beef and Swiss cheese and sauerkraut on rye breadverifiedMay 18, 2026
Reunificationnounthe act of coming together againverifiedMay 18, 2026
Reunionnouna party of former associates who have come together againverifiedMay 18, 2026
Reuptakenouna process of using up or consuming againverifiedMay 18, 2026
Reusable ProgramnounMWEa program that can be loaded once and executed repeatedlyverifiedMay 18, 2026
Reusable RoutinenounMWEa routine that can be loaded once and executed repeatedlyverifiedMay 18, 2026
reusenounThe action of using something again or more than once.ProcessMay 9, 2026
Revaluationnouna new appraisal or evaluationverifiedMay 18, 2026
Revealed ReligionnounMWEa religion founded primarily on the revelations of God to humankindverifiedMay 18, 2026
Reveillenouna signal to get up in the morningverifiedMay 18, 2026
Revelationnouncommunication of knowledge to man by a divine or supernatural agencyverifiedMay 18, 2026
Revelernouna celebrant who shares in a noisy partyverifiedMay 18, 2026
Revellernouna celebrant who shares in a noisy partyverifiedMay 18, 2026
Revelrynoununrestrained merrymakingverifiedMay 18, 2026
Revenuenounthe entire amount of income before any deductions are madeverifiedMay 18, 2026
Revenue BondnounMWEa bond issued by an agency that is commissioned to finance public worksverifiedMay 18, 2026
Revenue EnhancementnounMWEcharge against a citizen's person or property or activity for the support of governmentverifiedMay 18, 2026
Revenue SharingnounMWEdistribution of part of the federal tax income to states and municipalitiesverifiedMay 18, 2026
Revenue StampnounMWEa small piece of adhesive paper that is put on an object to show that a government tax has been paidverifiedMay 18, 2026
Revenue TariffnounMWEa tariff imposed to raise revenueverifiedMay 18, 2026
Revenuernouna government agent responsible for collecting revenue (especially one responsible for stopping bootlegging)verifiedMay 18, 2026
Reverberancenounhaving the character of a loud deep soundverifiedMay 18, 2026
Reverberationnounthe repetition of a sound resulting from reflection of the sound wavesverifiedMay 18, 2026
Reverberatory FurnacenounMWEa furnace in which the material that is being treated is heated indirectly by flames that are directed at the roof and walls of the furnaceverifiedMay 18, 2026
Reverienounan abstracted state of absorptionverifiedMay 18, 2026
Reversnouna lapel on a woman's garmentverifiedMay 18, 2026
Reversalnouna judgment by a higher court that the judgment of a lower court was incorrect and should be set asideverifiedMay 18, 2026
Reverse Address Resolution ProtocolnounMWERARP (Reverse Address Resolution Protocol) is a protocol by which a physical machine in a local area network can request to learn its IP address from a gateway server's Address Resolution Protocol table or cache. A network administrator creates a table in a local area network's gateway router that maps the physical machine (or Media Access Control - MAC address) addresses to corresponding Internet Protocol addresses. When a new machine is set up, its RARP client program requests from the RARP server on the router to be sent its IP address. Assuming that an entry has been set up in the router table, the RARP server will return the IP address to the machine which can store it for future use.NetworkMay 9, 2026
Reverse EngineeringnounMWEAcquiring sensitive data by disassembling and analyzing the design of a system component.ThreatRestrictedIPMay 12, 2026
Reverse FaultnounMWEa geological fault in which the upper side appears to have been pushed upward by compressionverifiedMay 18, 2026
Reverse GearnounMWEthe gears by which the motion of a machine can be reversedverifiedMay 18, 2026
Reverse HangnounMWEa hang with the arms extended in backverifiedMay 18, 2026
Reverse LightningnounMWEatmospheric discharges (lasting 10 msec) bursting from the tops of giant storm clouds in blue cones that widen as they flash upwardverifiedMay 18, 2026
Reverse LookupnounMWEFind out the hostname that corresponds to a particular IP address. Reverse lookup uses an IP (Internet Protocol) address to find a domain name.CapabilityMay 12, 2026
Reverse OsmosisnounMWE(chemistry) a method of producing pure waterverifiedMay 18, 2026
Reverse Polish NotationnounMWEa parenthesis-free notation for forming mathematical expressions in which each operator follows its operandsverifiedMay 18, 2026
Reverse ProxynounMWEReverse proxies take public HTTP requests and pass them to back-end webservers to send the content to it, so the proxy can then send the content to the end-user.NetworkMay 9, 2026
Reverse SplitnounMWEa decrease in the number of outstanding shares of a corporation without changing the shareholders' equityverifiedMay 18, 2026
Reverse Stock SplitnounMWEa decrease in the number of outstanding shares of a corporation without changing the shareholders' equityverifiedMay 18, 2026
Reverse TranscriptasenounMWEa polymerase that catalyzes the formation of DNA using RNA as a templateverifiedMay 18, 2026
Reverse Transcriptase InhibitornounMWEan antiviral drug that inhibits the action of reverse transcriptase in retroviruses such as HIVverifiedMay 18, 2026
Reversibilitynounthe quality of being reversible in either directionverifiedMay 18, 2026
Reversible ProcessnounMWEany process in which a system can be made to pass through the same states in the reverse order when the process is reversedverifiedMay 18, 2026
Reversing ThermometernounMWEa thermometer that registers the temperature in deep watersverifiedMay 18, 2026
Reversionnoun(law) an interest in an estate that reverts to the grantor (or his heirs) at the end of some period (e.g., the death of the grantee)verifiedMay 18, 2026
Reversionary AnnuitynounMWEan annuity payable to one person in the event that someone else is unable to receive itverifiedMay 18, 2026
Reversionernoun(law) a party who is entitled to an estate in reversionverifiedMay 18, 2026
Reversionistnounsomeone who lapses into previous undesirable patterns of behaviorverifiedMay 18, 2026
Reverynounan abstracted state of absorptionverifiedMay 18, 2026
Revetementnouna facing (usually masonry) that supports an embankmentverifiedMay 18, 2026
Revetmentnouna facing (usually masonry) that supports an embankmentverifiedMay 18, 2026
review and approvenounMWEExamine, make changes if necessary, and officially accept.ProcessRegulatedMay 12, 2026
Review ArticlenounMWEan essay or article that gives a critical evaluation (as of a book or play)verifiedMay 18, 2026
Review CopynounMWEa copy of a newly published book that is sent for review to a writer or periodicalverifiedMay 18, 2026
Reviewernounsomeone who reads manuscripts and judges their suitability for publicationverifiedMay 18, 2026
Reviewing StandnounMWEa stand from which a parade or military force can be reviewedverifiedMay 18, 2026
Revilementnouna rude expression intended to offend or hurtverifiedMay 18, 2026
Revisalnounthe act of rewriting somethingverifiedMay 18, 2026
Revisernounsomeone who puts text into appropriate form for publicationverifiedMay 18, 2026
Revisingnounediting that involves writing something againverifiedMay 18, 2026
Revisionnounthe act of revising or altering, usually involving reconsideration and modificationverifiedMay 18, 2026
Revisionismnounany dangerous departure from the teachings of MarxverifiedMay 18, 2026
Revisionistnouna Communist who tries to rewrite Marxism to justify a retreat from the revolutionary positionverifiedMay 18, 2026
Revitalisationnounbringing again into activity and prominenceverifiedMay 18, 2026
Revitalizationnounbringing again into activity and prominenceverifiedMay 18, 2026
Revivalnounan evangelistic meeting intended to reawaken interest in religionverifiedMay 18, 2026
Revival MeetingnounMWEan evangelistic meeting intended to reawaken interest in religionverifiedMay 18, 2026
Revivalismnounan attempt to reawaken the evangelical faithverifiedMay 18, 2026
Revivalistnouna preacher of the Christian gospelverifiedMay 18, 2026
Revivificationnounbringing again into activity and prominenceverifiedMay 18, 2026
Revocationnounthe act (by someone having the authority) of annulling something previously doneverifiedMay 18, 2026
Revolutionnouna drastic and far-reaching change in ways of thinking and behavingverifiedMay 18, 2026
Revolutionary GroupnounMWEa political unit organized to promote revolutionverifiedMay 18, 2026
Revolutionismnouna belief in the spread of revolutionary principlesverifiedMay 18, 2026
Revolutionistnouna radical supporter of political or social revolutionverifiedMay 18, 2026
Revolutions Per MinutenounMWErate of revolution of a motorverifiedMay 18, 2026
Revolvernouna door consisting of four orthogonal partitions that rotate about a central pivotverifiedMay 18, 2026
Revolving Charge AccountnounMWEa charge account that does not have to be paid to zero balanceverifiedMay 18, 2026
Revolving CreditnounMWEa consumer credit line that can be used up to a certain limit or paid down at any timeverifiedMay 18, 2026
Revolving DoornounMWEan organization or institution with a high rate of turnover of personnel or membershipverifiedMay 18, 2026
Revolving FundnounMWEa fund which, if borrowed or used, is intended to be replenished so it may be loaned or spent repeatedlyverifiedMay 18, 2026
Revuenouna variety show with topical sketches and songs and dancing and comediansverifiedMay 18, 2026
Revulsionnounintense aversionverifiedMay 18, 2026
Rewa-Rewanounslender elegant tree of New Zealand having racemes of red flowers and yielding valuable mottled red timberverifiedMay 18, 2026
Rewordingnounchanging a particular word or phraseverifiedMay 18, 2026
Rewrite MannounMWEsomeone who puts text into appropriate form for publicationverifiedMay 18, 2026
Rewriternounsomeone who puts text into appropriate form for publicationverifiedMay 18, 2026