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Glossary · Nouns · R

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TermTypeDefinitionClassificationsUpdated
Resinoidnouna plastic containing resinsverifiedMay 18, 2026
Resistancenounthe degree of unresponsiveness of a disease-causing microorganism to antibiotics or other drugs (as in penicillin-resistant bacteria)verifiedMay 18, 2026
Resistance PyrometernounMWEpyrometer that measures high temperatures by the resistance in a heated wireverifiedMay 18, 2026
Resistance ThermometernounMWEthermometer that measures temperature by changes in the resistance of a spiral of platinum wireverifiedMay 18, 2026
Resistance UnitnounMWEthe reciprocal of conductanceverifiedMay 18, 2026
Resisternounsomeone who systematically obstructs some action that others want to takeverifiedMay 18, 2026
Resisting ArrestnounMWEphysical efforts to oppose a lawful arrestverifiedMay 18, 2026
Resistivitynouna material's opposition to the flow of electric currentverifiedMay 18, 2026
Resistornounan electrical device that resists the flow of electrical currentverifiedMay 18, 2026
Resolutenessnounthe trait of being resoluteverifiedMay 18, 2026
resolutionnounThe action of solving a problem, dispute, or contentious matter.ProcessMay 9, 2026
Resolventnouna liquid substance capable of dissolving other substancesverifiedMay 18, 2026
Resolvingnounanalysis into clear-cut componentsverifiedMay 18, 2026
Resolving PowernounMWEthe ability of a microscope or telescope to measure the angular separation of images that are close togetherverifiedMay 18, 2026
Resonancenouna vibration of large amplitude produced by a relatively small vibration near the same frequency of vibration as the natural frequency of the resonating systemverifiedMay 18, 2026
Resonant CircuitnounMWEan electrical circuit that combines capacitance and inductance in such a way that a periodic electric oscillation will reach maximum amplitudeverifiedMay 18, 2026
Resonating ChambernounMWEa hollow chamber whose dimensions allow the resonant oscillation of electromagnetic or acoustic wavesverifiedMay 18, 2026
Resonatornounan electrical circuit that combines capacitance and inductance in such a way that a periodic electric oscillation will reach maximum amplitudeverifiedMay 18, 2026
Resorcinolnouna crystalline phenol obtained from various resinsverifiedMay 18, 2026
Resorcinolphthaleinnouna yellow dye that is visible even when highly dilutedverifiedMay 18, 2026
Resorptionnounthe organic process in which the substance of some differentiated structure that has been produced by the body undergoes lysis and assimilationverifiedMay 18, 2026
Resort AreanounMWEan area where many people go for recreationverifiedMay 18, 2026
Resort HotelnounMWEa fashionable hotel usually in a resort areaverifiedMay 18, 2026
resourcenounAn asset available for use.candidateMay 9, 2026
Resource EncapsulationnounMWEMethod by which the reference monitor mediates accesses to an information system resource. Resource is protected and not directly accessible by a subject. Satisfies requirement for accurate auditing of resource usage.ControlMay 9, 2026
Resource ExhaustionnounMWEResource exhaustion attacks involve tying up finite resources on a system, making them unavailable to others.ThreatMay 9, 2026
Resourcefulnessnounthe quality of being able to cope with a difficult situationverifiedMay 18, 2026
Respectabilitynounhonorableness by virtue of being respectable and having a good reputationverifiedMay 18, 2026
Respecternouna person who respects someone or somethingverifiedMay 18, 2026
Respectfulnessnouncourteous regard for people's feelingsverifiedMay 18, 2026
Respirationnounthe metabolic processes whereby certain organisms obtain energy from organic moleculesverifiedMay 18, 2026
Respiratornouna breathing device for administering long-term artificial respirationverifiedMay 18, 2026
Respiratory AcidosisnounMWEacidosis resulting from reduced gas exchange in the lungs (as in emphysema or pneumonia)verifiedMay 18, 2026
Respiratory AlkalosisnounMWEalkalosis resulting from increased gas exchange in the lungs (as in hyperventilation associated with extreme anxiety or aspirin intoxication or metabolic acidosis)verifiedMay 18, 2026
Respiratory CenternounMWEthe center in the medulla oblongata and pons that integrates sensory information about the level of oxygen and carbon dioxide in the blood and determines the signals to be sent to the respiratory musclesverifiedMay 18, 2026
Respiratory DiseasenounMWEa disease affecting the respiratory systemverifiedMay 18, 2026
Respiratory DisordernounMWEa disease affecting the respiratory systemverifiedMay 18, 2026
Respiratory Distress Syndrome of the NewbornnounMWEan acute lung disease of the newborn (especially the premature newborn)verifiedMay 18, 2026
Respiratory IllnessnounMWEa disease affecting the respiratory systemverifiedMay 18, 2026
Respiratory InfectionnounMWEany infection of the respiratory tractverifiedMay 18, 2026
Respiratory OrgannounMWEany organ involved in the process of respirationverifiedMay 18, 2026
Respiratory QuotientnounMWEthe ratio of the volume of carbon dioxide expired to the volume of oxygen consumed by an organism or cell in a given period of timeverifiedMay 18, 2026
Respiratory RatenounMWEthe rate at which a person inhales and exhalesverifiedMay 18, 2026
Respiratory Syncytial VirusnounMWEa paramyxovirus that forms syncytia in tissue culture and that is responsible for severe respiratory diseases such as bronchiolitis and bronchial pneumonia (especially in children)verifiedMay 18, 2026
Respiratory SystemnounMWEthe system for taking in oxygen and giving off carbon dioxideverifiedMay 18, 2026
Respiratory TractnounMWEthe passages through which air enters and leaves the bodyverifiedMay 18, 2026
Respiratory Tract InfectionnounMWEany infection of the respiratory tractverifiedMay 18, 2026
Resplendencenounbrilliant radiant beautyverifiedMay 18, 2026
Resplendencynounbrilliant radiant beautyverifiedMay 18, 2026
Resplendent TrogonnounMWEvery rare Central American birdverifiedMay 18, 2026
Respond FunctionnounMWEDevelop and implement the appropriate activities to take action regarding a detected cybersecurity event.ProcessMay 9, 2026
RespondernounThe entity that responds to the initiator of the authentication exchange.IdentityMay 12, 2026
responsenounAn action taken that addresses an incident and assesses the level of containment and control activity required.ProcessMay 12, 2026
response activitynounMWEAny task performed by an organization in reaction to discovered risks.ProcessMay 9, 2026
response and recovery strategynounMWEA systematic plan of action consisting of documented procedures for mitigating and recovering from a disruptive event.ProcessInternalMay 9, 2026
response plannounMWEA document detailing the steps that must be taken, or the activities that must be performed well, in response to risk assessment or audit findings.ProcessInternalMay 12, 2026
response teamnounMWEResponse teams include business, IT, emergency management, public affairs, communications, and continuity personnel.OrganizationMay 12, 2026
Response TimenounMWEthe time that elapses between a stimulus and the response to itverifiedMay 18, 2026
responsibilitynounThe state or fact of having control over someone.RequirementMay 9, 2026
Responsibility to ProvidenounMWEAn information distribution approach whereby relevant essential information is made readily available and discoverable to the broadest possible pool of potential users.RequirementMay 12, 2026
Responsible AInounMWEAn AI system that aligns development and behavior to goals and values. This includes developing and fielding AI technology in a manner that is consistent with democratic values.FrameworkMay 18, 2026
responsible entitynounMWEAny group or even individual with an organization that has been given a particular responsibility for a particular process.RoleRegulatedMay 12, 2026
Responsible IndividualnounMWEA trustworthy person designated by a sponsoring organization to authenticate individual applicants seeking certificates on the basis of their affiliation with the sponsor.RoleMay 18, 2026
Responsiblenessnouna form of trustworthinessverifiedMay 18, 2026
Responsivenessnounthe quality of being responsiveverifiedMay 18, 2026
Rest AreanounMWEdesignated paved area beside a main road where cars can stop temporarilyverifiedMay 18, 2026
Rest DaynounMWEa day set aside for restverifiedMay 18, 2026
Rest EnergynounMWEthe energy equivalent to the mass of a particle at rest in an inertial frame of referenceverifiedMay 18, 2026
Rest HomenounMWEan institution where people are cared forverifiedMay 18, 2026
Rest HousenounMWEa building used for shelter by travelers (especially in areas where there are no hotels)verifiedMay 18, 2026
Rest MassnounMWE(physics) the mass of a body as measured when the body is at rest relative to an observer, an inherent property of the bodyverifiedMay 18, 2026
Rest PeriodnounMWEa pause for relaxationverifiedMay 18, 2026
Rest StopnounMWEdesignated paved area beside a main road where cars can stop temporarilyverifiedMay 18, 2026
Rest-Curenounrest as a medical treatment for stress or anxiety etc.verifiedMay 18, 2026
Restatementnouna revised statementverifiedMay 18, 2026
Restaurantnouna building where people go to eatverifiedMay 18, 2026
Restaurant AttendantnounMWEsomeone employed to provide service in a dining roomverifiedMay 18, 2026
Restaurant ChainnounMWEa chain of restaurantsverifiedMay 18, 2026
Restauranternounthe proprietor of a restaurantverifiedMay 18, 2026
Restaurateurnounthe proprietor of a restaurantverifiedMay 18, 2026
Resternouna person who restsverifiedMay 18, 2026
Restfulnessnounthe attribute of being restfulverifiedMay 18, 2026
RestharrownounEurasian plant having loose racemes of pink or purple flowers and spiny stems and tough rootsverifiedMay 18, 2026
Resting PotentialnounMWEthe potential difference between the two sides of the membrane of a nerve cell when the cell is not conducting an impulseverifiedMay 18, 2026
Resting SporenounMWEa spore of certain algae or fungi that lies dormantverifiedMay 18, 2026
Restitutionnouna sum of money paid in compensation for loss or injuryverifiedMay 18, 2026
Restivenessnouncharacterized by nervousness and quickness to take frightverifiedMay 18, 2026
Restless LegsnounMWEfeeling of uneasiness and restlessness in the legs after going to bed (sometimes causing insomnia)verifiedMay 18, 2026
Restless Legs SyndromenounMWEfeeling of uneasiness and restlessness in the legs after going to bed (sometimes causing insomnia)verifiedMay 18, 2026
Restlessnessnouna feeling of agitation expressed in continual motionverifiedMay 18, 2026
Restorationnouna model that represents the landscape of a former geological age or that represents and extinct animal etc.verifiedMay 18, 2026
restoration operationnounMWEAn organized activity to restore something.ProcessMay 18, 2026
Restorernouna skilled worker who is employed to restore or refinish buildings or antique furnitureverifiedMay 18, 2026
Restrainernouna chemical that is added to a photographic developer in order to retard development and reduce the amount of fog on a filmverifiedMay 18, 2026
Restraintnounthe act of controlling by restraining someone or somethingverifiedMay 18, 2026
Restraint of TradenounMWEany act that tends to prevent free competition in businessverifiedMay 18, 2026
Restricted DatanounMWEAll data concerning (i) design, manufacture, or utilization of atomic weapons; (ii) the production of special nuclear material; or (iii) the use of special nuclear material in the production of energy, but shall not include data declassified or removed from the Restricted Data category pursuant to Section 142 [of the Atomic Energy Act of 1954].DataRestrictedCUIMay 9, 2026
Restrictionnounthe act of keeping something within specified bounds (by force if necessary)verifiedMay 18, 2026
Restriction EndonucleasenounMWEany of the enzymes that cut nucleic acid at specific restriction sites and produce restriction fragmentsverifiedMay 18, 2026
Restriction EnzymenounMWEany of the enzymes that cut nucleic acid at specific restriction sites and produce restriction fragmentsverifiedMay 18, 2026