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Glossary · Nouns · P

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TermTypeDefinitionClassificationsUpdated
Prothalamionnouna song in celebration of a marriageverifiedMay 18, 2026
Prothalamiumnouna song in celebration of a marriageverifiedMay 18, 2026
Prothoraxnounthe anterior part of an insect's thoraxverifiedMay 18, 2026
Prothrombinnouna protein in blood plasma that is the inactive precursor of thrombinverifiedMay 18, 2026
Prothrombin AcceleratornounMWEa coagulation factorverifiedMay 18, 2026
Prothrombinasenouncoagulation factor that is converted to an enzyme that converts prothrombin to thrombin in a reaction that depends on calcium ions and other coagulation factorsverifiedMay 18, 2026
Protirelinnounhormone released by the hypothalamus that controls the release of thyroid-stimulating hormone from the anterior pituitaryverifiedMay 18, 2026
Protistnounfree-living or colonial organisms with diverse nutritional and reproductive modesverifiedMay 18, 2026
Protistannounfree-living or colonial organisms with diverse nutritional and reproductive modesverifiedMay 18, 2026
Proto-Oncogenenouna normal gene that has the potential to become an oncogeneverifiedMay 18, 2026
Protoactiniumnouna short-lived radioactive metallic element formed from uranium and disintegrating into actinium and then into leadverifiedMay 18, 2026
Protoanthropologynounthe study humans prior to the invention of writingverifiedMay 18, 2026
Protoarchaeologynounthe study of prehistoric human artifacts and human fossilsverifiedMay 18, 2026
Protoarcheologynounthe study of prehistoric human artifacts and human fossilsverifiedMay 18, 2026
Protoavisnounmost primitive avian type knownverifiedMay 18, 2026
Protoceratopsnounsmall horned dinosaurverifiedMay 18, 2026
ProtocolnounSet of rules and formats, semantic and syntactic, permitting information systems to exchange information.NetworkMay 9, 2026
Protocol Data UnitnounMWEA unit of data specified in a protocol and consisting of protocol information and, possibly, user data.DataAug 30, 2026
Protocol EntitynounMWEEntity that follows a set of rules and formats (semantic and syntactic) that determines the communication behavior of other entities.NetworkMay 9, 2026
Protocol StacksnounMWEA set of network protocol layers that work together.NetworkMay 9, 2026
protocols, ports, applications, and services listnounMWEA compilation of all protocols, ports, applications, and services that are available.ArtifactInternalAug 30, 2026
Protoctistnounany of the unicellular protistsverifiedMay 18, 2026
Protoctist FamilynounMWEany of the families of ProtoctistaverifiedMay 18, 2026
Protoctist GenusnounMWEany genus of ProtoctistaverifiedMay 18, 2026
Protoctist OrdernounMWEthe order of protoctistsverifiedMay 18, 2026
Protohemenouna complex red organic pigment containing iron and other atoms to which oxygen bindsverifiedMay 18, 2026
Protoheminnouna reddish-brown chloride of hemeverifiedMay 18, 2026
ProtohippusnounPliocene horse approaching donkeys in sizeverifiedMay 18, 2026
Protohistorynounthe study humans prior to the invention of writingverifiedMay 18, 2026
Protologynounthe study of origins and first thingsverifiedMay 18, 2026
Protomammalnounprobably warm-bloodedverifiedMay 18, 2026
Protonnouna stable particle with positive charge equal to the negative charge of an electronverifiedMay 18, 2026
Proton AcceleratornounMWEa collider that collides beams of protons and antiprotonsverifiedMay 18, 2026
Proton Magnetic ResonancenounMWEresonance of protons to radiation in a magnetic fieldverifiedMay 18, 2026
Protoplasmnounthe substance of a living cell (including cytoplasm and nucleus)verifiedMay 18, 2026
Protoplasmic AstrocytenounMWEa kind of astrocyte found in the grey matterverifiedMay 18, 2026
Protoplastnouna biological unit consisting of a nucleus and the body of cytoplasm with which it interactsverifiedMay 18, 2026
Prototheriannounprimitive oviparous mammals found only in Australia and Tasmania and New GuineaverifiedMay 18, 2026
PrototypenounA prototype is an original model constructed to include all the technical characteristics and performances of the new product.ArtifactMay 18, 2026
Protozoal InfectionnounMWEany infection caused by a protozoanverifiedMay 18, 2026
Protozoologistnouna zoologist who studies protozoansverifiedMay 18, 2026
Protozoologynounthe branch of zoology that studies protozoansverifiedMay 18, 2026
Protozoonnounany of diverse minute acellular or unicellular organisms usually nonphotosyntheticverifiedMay 18, 2026
Protractionnounthe consequence of being lengthened in durationverifiedMay 18, 2026
Protractornoundrafting instrument used to draw or measure anglesverifiedMay 18, 2026
Protriptylinenountricyclic antidepressant used to treat clinical depressionverifiedMay 18, 2026
Protrusionnounsomething that bulges out or is protuberant or projects from its surroundingsverifiedMay 18, 2026
Protuberancenounsomething that bulges out or is protuberant or projects from its surroundingsverifiedMay 18, 2026
Proturannounany of several minute primitive wingless and eyeless insects having a cone-shaped headverifiedMay 18, 2026
Proud FleshnounMWEthe swollen tissue around a healing wound or ulcerverifiedMay 18, 2026
Provabilitynouncapability of being demonstrated or logically provedverifiedMay 18, 2026
Provenancenounwhere something originated or was nurtured in its early existenceverifiedMay 18, 2026
Provendernounfood for domestic livestockverifiedMay 18, 2026
Proveniencenounwhere something originated or was nurtured in its early existenceverifiedMay 18, 2026
Proverbnouna condensed but memorable saying embodying some important fact of experience that is taken as true by many peopleverifiedMay 18, 2026
provide fornounMWEMake adequate preparation for something.RequirementRegulatedMay 9, 2026
Providencenounthe prudence and care exercised by someone in the management of resourcesverifiedMay 18, 2026
Providernounsomeone whose business is to supply a particular service or commodityverifiedMay 18, 2026
Provincenounthe territory occupied by one of the constituent administrative districts of a nationverifiedMay 18, 2026
Provincial CapitalnounMWEthe capital city of a provinceverifiedMay 18, 2026
Provincialismnouna partiality for some particular placeverifiedMay 18, 2026
Proving GroundnounMWEa workplace for testing new equipment or ideasverifiedMay 18, 2026
ProvirusnouncDNA copy of the RNA genome of a retrovirusverifiedMay 18, 2026
provisionnounSomething provided or supplied.RequirementMay 12, 2026
Provisionernouna supplier of victuals or supplies to an armyverifiedMay 18, 2026
ProvisioningnounThe granting of access rights and executional privilege to an agent (human or machine) within an application(s) or system(s).ProcessAug 28, 2026
Provisonouna stipulated conditionverifiedMay 18, 2026
Provitaminnounvitamin precursorverifiedMay 18, 2026
Provitamin anounMWEan orange isomer of an unsaturated hydrocarbon found in many plantsverifiedMay 18, 2026
Provocateurnouna secret agent who incites suspected persons to commit illegal actsverifiedMay 18, 2026
Provocationnoununfriendly behavior that causes anger or resentmentverifiedMay 18, 2026
Provokernounsomeone who deliberately foments troubleverifiedMay 18, 2026
Provostnouna high-ranking university administratorverifiedMay 18, 2026
Provost CourtnounMWEa military court for trying people charged with minor offenses in an occupied areaverifiedMay 18, 2026
Provost GuardnounMWEa detachment under the command of a provost marshallverifiedMay 18, 2026
Provost MarshalnounMWEthe supervisor of the military policeverifiedMay 18, 2026
Prownounfront part of a vessel or aircraftverifiedMay 18, 2026
Prowessnouna superior skill that you can learn by study and practice and observationverifiedMay 18, 2026
Prowl CarnounMWEa car in which policemen cruise the streetsverifiedMay 18, 2026
Prowlernounsomeone who prowls or sneaks aboutverifiedMay 18, 2026
Proxemicsnounthe study of spatial distances between individuals in different cultures and situationsverifiedMay 18, 2026
Proximitynouna Gestalt principle of organization holding that (other things being equal) objects or events that are near to one another (in space or time) are perceived as belonging together as a unitverifiedMay 18, 2026
ProxynounA proxy is an application that “breaks” the connection between client and server. The proxy accepts certain types of traffic entering or leaving a network and processes it and forwards it. This effectively closes the straight path between the internal and external networks making it more difficult for an attacker to obtain internal addresses and other details of the organization’s internal network. Proxy servers are available for common Internet services; for example, a Hyper Text Transfer Protocol (HTTP) proxy used for Web access, and a Simple Mail Transfer Protocol (SMTP) proxy used for email.NetworkMay 9, 2026
Proxy AgentnounMWEA software application running on a firewall or on a dedicated proxy server that is capable of filtering a protocol and routing it between the interfaces of the device.NetworkMay 9, 2026
Proxy FightnounMWEa measure used by an acquirer to gain control of a takeover targetverifiedMay 18, 2026
Proxy servernounMWEA server that services the requests of its clients by forwarding those requests to other servers.NetworkMay 9, 2026
Proxy WarnounMWEa war instigated by a major power that does not itself participateverifiedMay 18, 2026
Prudenouna person excessively concerned about propriety and decorumverifiedMay 18, 2026
Prudencenounknowing how to avoid embarrassment or distressverifiedMay 18, 2026
Pruderynounexcessive or affected modestyverifiedMay 18, 2026
Prudishnessnounexcessive or affected modestyverifiedMay 18, 2026
Prune CakenounMWEmoist cake containing prunes that have been made into a pureeverifiedMay 18, 2026
Prune WhipnounMWEdessert made of prune puree and whipped creamverifiedMay 18, 2026
Prunernouna long-handled pruning saw with a curved blade at the end and sometimes a clipperverifiedMay 18, 2026
Pruningnounsomething that has been pruned off of a plantverifiedMay 18, 2026
Pruning HooknounMWEa long-handled pruning saw with a curved blade at the end and sometimes a clipperverifiedMay 18, 2026
Pruning KnifenounMWEa knife with a curved or hooked bladeverifiedMay 18, 2026
Pruning SawnounMWEa handsaw used for pruning treesverifiedMay 18, 2026
Pruning ShearsnounMWEshears with strong blades used for light pruning of woody plantsverifiedMay 18, 2026
Prunonouna liquor concocted from a mixture of ingredients (such as prunes and raisins and milk and sugar) that can be fermented to produce alcoholverifiedMay 18, 2026