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Glossary · Nouns · P

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TermTypeDefinitionClassificationsUpdated
Pencil LeadnounMWEmixture of graphite with clay in different degrees of hardnessverifiedMay 18, 2026
Pencil PushernounMWEa clerk who does boring paperworkverifiedMay 18, 2026
Pencil SharpenernounMWEa rotary implement for sharpening the point on pencilsverifiedMay 18, 2026
Pendant EarringnounMWEan earring with a pendant ornamentverifiedMay 18, 2026
Pendragonnounthe supreme war chief of the ancient BritonsverifiedMay 18, 2026
Pendulumnounan apparatus consisting of an object mounted so that it swings freely under the influence of gravityverifiedMay 18, 2026
Pendulum WatchnounMWE(18th century) a watch with a balance wheel having a fake pendulum attached to itverifiedMay 18, 2026
Peneplainnouna more or less level land surface representing an advanced stage of erosion undisturbed by crustal movementsverifiedMay 18, 2026
Peneplanenouna more or less level land surface representing an advanced stage of erosion undisturbed by crustal movementsverifiedMay 18, 2026
Penetrabilitynounthe quality of being penetrable (by people or light or missiles etc.)verifiedMay 18, 2026
Penetralianounthe innermost partsverifiedMay 18, 2026
Penetrating InjurynounMWEinjury incurred when an object (as a knife or bullet or shrapnel) penetrates into the bodyverifiedMay 18, 2026
Penetrating TraumanounMWEinjury incurred when an object (as a knife or bullet or shrapnel) penetrates into the bodyverifiedMay 18, 2026
PenetrationnounGaining unauthorized logical access to sensitive data by circumventing a system's protections.ThreatMay 12, 2026
Penetration BombnounMWEa bomb with about 30% explosive and a casing designed to penetrate hardened targets before the explosive detonatesverifiedMay 18, 2026
Penetration testnounMWEThe process of using approved, qualified personnel to conduct real-world attacks against a system to identify and correct security weaknesses before they are discovered and exploited by others.ProcessRestrictedMay 9, 2026
Penetration testingnounMWESecurity testing in which evaluators mimic real-world attacks in an attempt to identify ways to circumvent the security features of an application, system, or network. Penetration testing often involves issuing real attacks on real systems and data, using the same tools and techniques used by actual attackers. Most penetration tests involve looking for combinations of vulnerabilities on a single system or multiple systems that can be used to gain more access than could be achieved through a single vulnerability.ProcessRegulatedMay 9, 2026
Penetratornounan intruder who passes into or through (often by overcoming resistance)verifiedMay 18, 2026
Pengonounformerly the basic unit of money in Hungary until it was replaced by the forint in 1946verifiedMay 18, 2026
Penguinnounshort-legged flightless birds of cold southern especially Antarctic regions having webbed feet and wings modified as flippersverifiedMay 18, 2026
Penicillaminenouna drug used to treat heavy metal poisoning and Wilson's disease and severe arthritisverifiedMay 18, 2026
Penicillinnounany of various antibiotics obtained from Penicillium molds (or produced synthetically) and used in the treatment of various infections and diseasesverifiedMay 18, 2026
Penicillin FnounMWEthe first form of penicillin that was isolated in Great BritainverifiedMay 18, 2026
Penicillin GnounMWEthe penicillin that constitutes the principal component of many commercial antibioticsverifiedMay 18, 2026
Penicillin OnounMWEa penicillin that is similar in antibiotic action to penicillin G but is obtained differentlyverifiedMay 18, 2026
Penicillin VnounMWEa crystalline penicillin similar in action to penicillin G but more resistant to the action of gastric acidsverifiedMay 18, 2026
Penicillin-Resistant BacterianounMWEbacteria that are unaffected by penicillinverifiedMay 18, 2026
Penicillinasenounenzyme produced by certain bacteria that inactivates penicillin and results in resistance to that antibioticverifiedMay 18, 2026
Penicillinase-Resistant AntibioticnounMWEa form of penicillin that is not rendered inactive by penicillinaseverifiedMay 18, 2026
Penile ImplantnounMWEan implant that creates an artificial erectionverifiedMay 18, 2026
Peninsulanouna large mass of land projecting into a body of waterverifiedMay 18, 2026
Penisnounthe male organ of copulation (`member' is a euphemism)verifiedMay 18, 2026
Penis EnvynounMWEa female's presumed envy of the male's penis, according to Freudian psychoanalysisverifiedMay 18, 2026
Penitencenounremorse for your past conductverifiedMay 18, 2026
Penknifenouna small pocketknifeverifiedMay 18, 2026
Penlightnouna small flashlight resembling a fountain penverifiedMay 18, 2026
Penmannouninformal terms for journalistsverifiedMay 18, 2026
Penmanshipnounbeautiful handwritingverifiedMay 18, 2026
Penn'orthnounthe amount that can be bought for a pennyverifiedMay 18, 2026
Pennantnouna flag longer than it is wide (and often tapering)verifiedMay 18, 2026
Pennenounpasta in short tubes with diagonally cut endsverifiedMay 18, 2026
Penninoun100 pennia formerly equaled 1 markka in FinlandverifiedMay 18, 2026
Pennilessnessnouna state of lacking moneyverifiedMay 18, 2026
Penningnounthe act of creating written worksverifiedMay 18, 2026
Pennonnounwing of a birdverifiedMay 18, 2026
Pennoncelnouna small pennant borne on a lanceverifiedMay 18, 2026
Pennoncellenouna small pennant borne on a lanceverifiedMay 18, 2026
Pennynouna fractional monetary unit of Ireland and the United KingdomverifiedMay 18, 2026
Penny AntenounMWEa business deal on a trivial scaleverifiedMay 18, 2026
Penny Ante PokernounMWEpoker played for small stakesverifiedMay 18, 2026
Penny ArcadenounMWEan arcade with coin-operated devices for entertainmentverifiedMay 18, 2026
Penny BanknounMWEa child's coin bank (often shaped like a pig)verifiedMay 18, 2026
Penny DreadfulnounMWEa melodramatic paperback novelverifiedMay 18, 2026
Penny GrassnounMWEfoetid Eurasian weed having round flat podsverifiedMay 18, 2026
Penny PinchernounMWEsomeone who is excessively careful with money (who pinches every penny before letting go of it)verifiedMay 18, 2026
Penny StocknounMWEa stock selling for less that $1/shareverifiedMay 18, 2026
Pennycressnounany of several plants of the genus ThlaspiverifiedMay 18, 2026
PennyroyalnounEurasian perennial mint have small lilac-blue flowers and ovate leavesverifiedMay 18, 2026
Pennyroyal OilnounMWEoil from European pennyroyal having an odor like mintverifiedMay 18, 2026
Pennyweightnouna unit of apothecary weight equal to 24 grainsverifiedMay 18, 2026
Pennywhistlenounan inexpensive fipple fluteverifiedMay 18, 2026
Pennyworthnounthe amount that can be bought for a pennyverifiedMay 18, 2026
Penochenounfudge made with brown sugar and butter and milk and nutsverifiedMay 18, 2026
Penologistnouna person who studies the theory and practice of prison managementverifiedMay 18, 2026
Penologynounthe branch of criminology concerned with prison management and prisoner rehabilitationverifiedMay 18, 2026
Penoncelnouna small pennant borne on a lanceverifiedMay 18, 2026
Penpushernouna clerk who does boring paperworkverifiedMay 18, 2026
Pension AccountnounMWEa plan for setting aside money to be spent after retirementverifiedMay 18, 2026
Pension FundnounMWEa financial institution that collects regular contributions from employers to provide retirement income for employeesverifiedMay 18, 2026
Pension PlannounMWEa plan for setting aside money to be spent after retirementverifiedMay 18, 2026
Pensionarynouna person who works only for moneyverifiedMay 18, 2026
Pensionernounthe beneficiary of a pension fundverifiedMay 18, 2026
Pensivenessnounpersistent morbid meditation on a problemverifiedMay 18, 2026
Penstocknounregulator consisting of a valve or gate that controls the rate of water flow through a sluiceverifiedMay 18, 2026
Pentaclenouna star with 5 pointsverifiedMay 18, 2026
Pentadnounthe cardinal number that is the sum of four and oneverifiedMay 18, 2026
Pentaerythritolnouna coronary vasodilator (trade name Peritrate) used to treat angina pectorisverifiedMay 18, 2026
Pentagonnouna five-sided polygonverifiedMay 18, 2026
Pentagramnouna star with 5 pointsverifiedMay 18, 2026
Pentahedronnounany polyhedron having five plane facesverifiedMay 18, 2026
Pentailnounbrown tree shrew having a naked tail bilaterally fringed with long stiff hairs on the distal thirdverifiedMay 18, 2026
Pentameternouna verse line having five metrical feetverifiedMay 18, 2026
Pentamethylenetetrazolnouna drug used as a circulatory and respiratory stimulantverifiedMay 18, 2026
Pentanglenouna star with 5 pointsverifiedMay 18, 2026
Pentanoic AcidnounMWEa clear liquid carboxylic acid used in perfumes and drugsverifiedMay 18, 2026
Pentastomidnounwormlike arthropod having two pairs of hooks at the sides of the mouthverifiedMay 18, 2026
Pentathletenounan athlete who competes in a pentathlonverifiedMay 18, 2026
Pentathlonnounan athletic contest consisting of five different eventsverifiedMay 18, 2026
Pentatonenouna gapped scale with five notesverifiedMay 18, 2026
Pentatonic ScalenounMWEa gapped scale with five notesverifiedMay 18, 2026
Pentazocinenounanalgesic drug (trade name Talwin) that is less addictive than morphineverifiedMay 18, 2026
Pentecostalismnounthe principles and practices of Pentecostal religious groupsverifiedMay 18, 2026
Penthousenounan apartment located on the top floors of a buildingverifiedMay 18, 2026
Pentimentonounthe reappearance in a painting of an underlying image that had been painted over, usually when the later painting becomes transparent with ageverifiedMay 18, 2026
Pentlanditenouna mineral (iron and nickel sulphide) that is the chief ore of nickelverifiedMay 18, 2026
Pentobarbitalnouna barbiturate (trade name Nembutal) used as a sedative and hypnotic and antispasmodicverifiedMay 18, 2026
Pentobarbital SodiumnounMWEa barbiturate (trade name Nembutal) used as a sedative and hypnotic and antispasmodicverifiedMay 18, 2026
Pentodenouna thermionic tube having five electrodesverifiedMay 18, 2026
Pentosenounany monosaccharide sugar containing five atoms of carbon per moleculeverifiedMay 18, 2026
Pentoxidenounan oxide containing five atoms of oxygen in the moleculeverifiedMay 18, 2026