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pablumizeTo reduce or render (something) into pablum.pachynemeMisspelling of pachynema.pachytene(biology) The third stage of prophase 1 of meiosis, during which the chromosomes shorten and divide into four chromatids.packetiseAlternative form of packetize.packetize(signal processing) To form data into packets, or bundled units, according to a specific protocolpackhorseA horse used as a pack animal.packhouseA building where fruit and vegetables are packed prior to distribution to shops.packstoneA kind of grain-supported calcareous rock containing lime mud.pacotille(Trinidad and Tobago) Something of little or no value exchanged for something valuable, originally goods exchanged for slaves.paderaite(mineralogy) A monoclinic-prismatic creamy white mineral containing bismuth, copper, lead, silver, sulfur, and tellurium.paederineAny rove beetle of the subfamily Paederinae.paganoite(mineralogy) A triclinic-pinacoidal gray mineral containing arsenic, bismuth, cobalt, nickel, and oxygen.pagetableAlternative form of page table.pagocloneAn anxiolytic cyclopyrrolone drug.paillasse(chiefly British) An under bed or mattress of straw.pailletteA sequin or spangle.painscoreAlternative form of pain score.painshareSynonym of painsharing.paintableThat can be painted; to which a coating of paint can be applied.paintlikeResembling or characteristic of paint.pakhanateAnother term for mafia state.palacinkeSlavic crepes.palafitteSynonym of pile (“wooden structure used to support prehistoric dwellings”).palampore(now historical) A rich cotton cloth, originally made in India, used for bedspreads and shawls.palankineObsolete form of palanquin.palatablePleasing to the taste, tasty.palbinone(organic chemistry) The steroid ketone (3S,5R,8R,9R,10S,14S)-3,17-dihydroxy-4,4,8,10,14-pentamethyl-2,3,5,6,7,9-hexahydro-1H-cyclopenta[a]phenanthrene-15,16-dione present in the roots of Paeonia albiflorapalemporeAlternative form of palampore.paleocaveA cave that was inhabited in the distant past, in particular by paleohumanspaleodemeAn ancient town or similar communitypaleodose(archaeology) The dose of natural radiation accumulated by an archaeological samplepaleoduneAlternative form of palaeodune.paleofireAn ancient (wild) firepaleolakeAn ancient lake, especially one that no longer exists.paleopoleThe current position that the north pole or south pole would have had in the geologic past.paleotreeAn ancient treepaleotypeAlternative form of palaeotype.palestraeplural of palestrapalettiseAlternative spelling of palettize.palettizeMisspelling of palletizepalladate(inorganic chemistry) Any of several oxyanions of palladium, or the corresponding saltspalladide(inorganic chemistry) Any binary compound of palladium and a more electropositive metalpallasite(geology) A stony-iron meteorite embedded with glassy crystals of olivine.palletise(transitive) To place on a pallet or pallets.palletize(transitive) To place on a pallet or pallets.palliasse(chiefly British) A thin mattress or under bed stuffed with straw.pallisadeObsolete form of palisade.palmamide(organic chemistry, obsolete) The amide of palmic acidpalmatine(organic chemistry) A protoberberine alkaloid found in several plants, used in the treatment of jaundice, dysentery, hypertension, inflammation, and liver-related diseases.palmhouseA glasshouse for growing palms and other tropical plants.palmipedeAlternative form of palmiped.palmitate(chemistry) Any salt or ester of palmitic acid.palmitineAlternative form of palmitin.palmitome(biochemistry) The collection of palmitoylated proteins of an organismpalmitone(chemistry) The ketone of palmitic acid.paloverdeAlternative spelling of palo verde.palpebraeplural of palpebrapalpitate(intransitive) To beat strongly or rapidly; said especially of the heart.palpomere(entomology) Any segment of the maxillary palpus of some insectspalsgrave(historical) A count palatinate of the Holy Roman Empire, possessing near-royal powers within his county.palsylikeResembling or characteristic of a palsy, especially shaking motions.paludrine(medicine) The antimalarial drug proguanil hydrochloride.palythine(organic chemistry) The amino acid 2-[[3-amino-5-hydroxy-5-(hydroxymethyl)-2-methoxycyclohex-2-en-1-ylidene]amino]acetic acid.pamaquine(pharmacology) A drug used for the treatment of malaria, closely related to primaquine; it was the first synthetic antimalarial.pamperize(transitive, dated) To pamper.pampooteeAlternative form of pampootie.pampootieA traditional shoe, formerly made and worn on the Aran Islands of County Galway, Ireland, consisting of a single piece of untanned hide folded around the foot and stitched with twine or a leather strap.pancrease(biochemistry) Any of several digestive enzymes found in the pancreas.pandalikeResembling or characteristic of a panda.pandarize(obsolete) To pander.panderageThe act of pandering.pandurate(botany, of leaves) Having a shape reminiscent of a fiddle; obovate with a pair of sinuous indentations near the base.panelwiseIn the manner of a panel.panethite(mineralogy) A monoclinic-prismatic brownish yellow mineral containing calcium, iron, magnesium, manganese, oxygen, phosphorus, potassium, and sodium.panettoneA soft Italian sourdough brioche from Milan, with candied fruit, usually prepared for Christmas as a dessert.pangenome(genetics) The genome of all the strains of a particular clade (most commonly of bacteria and archaea).panhandleThe handle of a pan.paniclikeResembling or characteristic of panic.pansylikeResembling or characteristic of a pansy.pantaloneAlternative form of pantaloon (“buffoon”).pantihoseAlternative spelling of pantyhose.pantoffleAlternative form of pantofle.pantomime(now rare) A Classical comic actor, especially one who works mainly through gesture and mime.pantophleAlternative form of pantofle.pantoufleAlternative form of pantofle.pantyhose(Canada, US) Thin nylon tights worn over the legs, usually tan in color.pantylineAlternative spelling of panty line.panunzite(mineralogy) A hexagonal-pyramidal mineral containing aluminum, oxygen, potassium, silicon, and sodium.panvasive(neologism, of surveillance) Massively invasive on a large scale.paolovite(mineralogy) An orthorhombic-dipyramidal white mineral containing palladium and tin.papabotteAlternative form of papabote.papagoite(mineralogy) A monoclinic-prismatic light blue mineral containing aluminum, calcium, copper, hydrogen, oxygen, and silicon.papainase(biochemistry) An endopeptidase present in papayapaperlikeSimilar to paper in some way or most ways.paperwareArticles made from paper.papeterie(dated) A case or box containing paper and writing materials.papillateResembling papillae, or covered in papillae.papillose(botany) Bearing, covered with or resembling papillae.papillote(cooking) A small piece of aluminum foil or parchment paper, wrapped around food during cooking.papillule(zoology) A very small papilla.papionine(zoology) Of or pertaining to the monkey tribe Papionini.papuamideAny of a group of depsipeptides, isolated from a sponge, that appear to protect T cells from HIV.parabrakeSynonym of drag parachute.paracaineSynonym of proparacaine.paracanoe(sports) A water sport, similar to canoeing, for athletes with a range of physical disabilities.parachute(zoology) A web or fold of skin extending between the legs of gliding mammals, such as the flying squirrel and colugo.paraclade(genetics) A group of paraphyletic or monophyletic evolutionary lineagesparacleteAn advocate or helper.paraclone(biology) Any of a colony of stem cells that have differing capacities for growth.paraclose(architecture) Alternative form of parclose.paracrineDescribing a hormone or other secretion released from endocrine cells into the surrounding tissue rather than into the bloodstreamparadelle(poetry) A ridiculously restrictive poetic form consisting of four sestets that must repeat lines and reuse all previous words according to a fixed pattern.paraffineDated form of paraffin.paraglide(intransitive) To take part in paragliding.paragrele(dated) A lightning conductor erected, as in a vineyard, for drawing off the electricity in the atmosphere in order to prevent hailstorms.paralogue(genetics) A pair of genes that derives from the same ancestral gene and now reside at different locations within the same genome.parametreMisspelling of parameter.paraphileOne who has a paraphiliaparaphone(music) A sound midway between a concord and a discord.parapluie(uncommon) An umbrella.pararhymeSynonym of consonance.parastateA region that seeks or claims but does not have the status of a recognized independent state.parastyle(dentistry) A style in front of the paracone.parbuckleA double sling made of a single rope, for slinging a cask, gun, etc.parcelizeAlternative form of parcellize.parcianteAn irrigator with the right to use an acequia.parcourseA path or course, usually public, consisting of various obstacles or areas, designed for exercise purposes.pardaloteAny of the Australian birds of the genus Pardalotus, which feed on lerps.parembole(rhetoric) A kind of rhetorical parenthesis. The insertion of something relating to the subject in the middle of a period.parentageThe identity and nature of one's parents, and in particular, the legitimacy of one's birth.parenteseBaby talk, a speech register used by parents talking to their children.parentizeSynonym of parentify.pareptide(pharmacology) An antiparkinsonian drug.parfilageThe unravelling of woven fabrics, to save gold or silver threads.parfleche(US) A form of stiff leather made from rawhide.parfumine(organic chemistry) An alkaloid found in Fumaria parviflora.pargasite(mineralogy) A complex inosilicate mineral of the amphibole group.pargyline(pharmacology) the monoamine oxidase inhibitor N-benzyl-N-methyl-prop-2-yn-1-amine.parhypate(musical pitch) In Ancient Greek musical theory, the lower-pitched of the two movable notes in the nearer tetrachord on a lyre, pitched lower than the lichanos and higher than the hypate.parkerite(mineralogy) An orthorhombic-dipyramidal light cream mineral containing bismuth, lead, nickel, and sulfur.parkerize(transitive) To rustproof by the application of a protective phosphate coating.parnauite(mineralogy) An orthorhombic-disphenoidal mineral containing arsenic, copper, hydrogen, oxygen, and sulfur.parolableEligible for parole.parquetteAlternative form of parquet.parricideSomeone who kills a relative, especially a parent.parroteseThe vocalisations of parrots, conceived of as a language.parrotiseAlternative form of parrotize.parrotizeTo parrot; to repeat what one has been told.parseableAlternative spelling of parsable.parseleneMisspelling of paraselene.parsemage(art) A surrealist automatic art technique in which dust from charcoal or chalk is scattered onto water and then skimmed off by passing stiff paper or cardboard just under the surface.parsonageThe residence of the minister of a parish.partheite(mineralogy) A monoclinic-prismatic mineral containing aluminum, calcium, hydrogen, oxygen, and silicon.particuleObsolete form of particle.partitiveThat divides something into parts.partiture(music) The printing of each instrument's part on a separate stavepartridge(ornithology) Any bird of a number of genera in the family Phasianidae, notably in the genera Perdix and Alectoris.partscore(bridge) A trick score less than 100, obtained by making a contract.partylikeResembling or characteristic of a party.partywaredisposable plates, cups, etc. intended for children's partiespartywideThroughout a political party.parvitude(obsolete) smallnessparvoline(organic chemistry) A base of the pyridine group, found in coal tar.parwelite(mineralogy) A monoclinic-domatic yellow brown mineral containing antimony, arsenic, calcium, magnesium, manganese, oxygen, and silicon.pashalikeResembling or characteristic of a pasha.pasitroteA horse gait similar to an amblepasodobleAlternative form of paso doble (“dance; music”).paspaline(organic chemistry) The diterpenoid indole derivative 2-[(1S,2S,5S,7S,10S,11R,14S)-1,2,10-trimethyl-6-oxa-23-azahexacyclo[12.10.0.02,11.05,10.016,24.017,22]tetracosa-16(24),17,19,21-tetraen-7-yl]propan-2-ol present in Penicillium paxillipasserineAny bird of the order Passeriformes, which comprises more than half of all bird species.passivate(chemistry) To reduce the chemical reactivity of (a surface) by applying a coating.passivise(British, grammar) To render into the passive form.passivize(transitive, US, grammar) To render into the passive form.pastalikeResembling pasta.pasteableCapable of being pasted, or pasted on.pastelikeResembling paste.pastinate(paeontology) Having three primary processes.pastorageHome or offices of a pastor; comparable to a rectorypastoraleA play or a musical product which has a pastoral subject.pastorateThe role or responsibilities of a pastor.pastorize(intransitive, archaic) To perform the religious duties of a pastor.pasturageA pasture; land that is used for pasture.patchableAble to be repaired; mendable.patchereeObsolete form of patchery (“living quarters for married soldiers”).patchfileAlternative form of patch file.patchlikeResembling a patch or patchworkpateamine(organic chemistry) An azabicyclic compound that inhibits the initiation of eukaryotic translationpatellateHaving a patella.patelline(rare) Of or pertaining to the family Patellidae of limpets.patentese(informal) The legal and technical jargon used in patents.pathetize(archaic, transitive) To hypnotize.pathogeneDated form of pathogen.pathotype(biology) Any of a group of organisms (of the same species) that have the same pathogenicity on a specified host.pathozone(biology) The region surrounding a host within which a pathogen is able to infect itpatiolikeResembling or characteristic of a patio.patricideThe murder of one's father.patrilineA line of descent from a male ancestor to a descendant (of either sex) in which the individuals in all intervening generations are fathers.patronageThe act of providing approval and support; backing; championship.patronateThe right or duty of a patron; patronage.patroniseNon-Oxford British English standard spelling of patronize.patronite(mineralogy) A black form of vanadium sulfide that is an ore of vanadiumpatronize(transitive) To act as a patron of; to defend, protect, or support.pattycake(colloquial) A childish or time-wasting activity.pauperageThe state of being a pauper; extreme poverty.pauperiseAlternative spelling of pauperize.pauperize(transitive) To make someone a pauper; to impoverish.paupietteA thin slice of meat or fish wrapped around a stuffing then fried, baked or braisedpauseableAlternative form of pausable.pautovite(mineralogy) An orthorhombic-dipyramidal dark steel gray mineral containing cesium, iron, potassium, rubidium, sulfur, and thallium.pavestoneSynonym of paving stone.pawdicure(humorous) Pedicure on the paws of an animal.paxillateHaving, or in the form of paxillaepaxilline(biochemistry) A potassium channel blocker; a toxic, tremorgenic indole alkaloid produced by Penicillium paxilli.paxilloseResembling a small stake.paychequeAlternative form of paycheck.payrolleeA person who is on a payroll.peaceableFavouring peace rather than conflict; not aggressive, tending to avoid violence (of people, actions etc.).peacelikeResembling or characteristic of peace.peacetimeThe period of time when a nation or people is at peace, not fighting a war.peachlikeResembling or characteristic of a peach.peachtreeAlternative form of peach tree.pearceite(mineralogy) A trigonal-hexagonal scalenohedral black mineral containing antimony, arsenic, copper, silver, and sulfur.pearllikeResembling a pearl; having the luster of a pearl.pearlwiseIn the manner of a pearl; so as to resemble a pearl.pecoraite(mineralogy) A monoclinic-prismatic dark green mineral containing hydrogen, nickel, oxygen, and silicon.pectinase(biochemistry) Any protease that break down pectin.pectinateResembling a comb.pectinose(biochemistry) Synonym of arabinose.pectolite(mineralogy) a gray-white mineral inosilicate hydroxide of calcium and sodium that crystallizes in the triclinic system, with the chemical formula NaCa₂Si₃O₈(OH).pedagogueA teacher or instructor of children; one whose occupation is to teach the young.pedantiseAlternative form of pedantize.pedantize(intransitive, archaic) To act pedantically; to use pedantic expressions.pedascule(archaic) a pedant, schoolmaster.pediplaneMisspelling of pediplain.pedobiome(biology) A biome of soil.pedometre(rare, nonstandard) Alternative form of pedometer.pedophageAlternative form of paedophage.pedophile(psychiatry, sexology) An adult or older adolescent who is sexually attracted to prepubescent children.pedophobe(rare, American spelling) A person who dislikes children.pedoscopeA fluoroscope formerly used in shoe shops to aid in the fitting of shoes, especially to children; eventually banned because of the health risks from X-rays.pedrizite(mineralogy) Any of a group of rare lithium amphibole minerals.peelhouse(archaic) A small tower, fort, or castle; a keep.pegmatiteA coarsely crystalline igneous or plutonic rock composed primarily of feldspar and quartz, normally with muscovite and/or biotite mica.pegmatize(transitive) To convert into pegmatite.pelehouse(obsolete, Scotland) A fortified housepelletiseAlternative form of pelletize.pelletize(transitive) To form into pellets.pelliculeA thin diaphanous fabric.pellotine(organic chemistry) An alkaloid from the cactus Lophophora diffusa, formerly used as a soporific drug.peloriate(botany) Exhibiting peloria.pempidineA ganglion-blocking drug, used orally to treat hypertension.pencatite(mineralogy, obsolete) A variety of predazzite.pendetide(pharmacology) A chelating agent consisting of pentetic acid linked to the tripeptide glycine (G) – ʟ-tyrosine (Y) – ʟ-lysine (K).pendulateTo swing like a pendulum.pendulineA penduline tit.penduncleMisspelling of peduncle.peneplaneAlternative form of peneplain.penetrateTo enter into; to make way into the interior of; to pierce.penislikeResembling a penis.penistone(obsolete) A coarse woolen material or frieze, used in England during the 16th and 17th centuries.penitenceThe condition of being penitent; a feeling of regret or remorse for doing wrong or sinning.penitenteA tall thin blade of hardened snow or ice, found closely spaced in large quantities at high altitudes.penninite(mineralogy) A double silicate of aluminium and magnesium.pennyanteAlternative spelling of penny-ante.pennyrileAlternative form of pennyroyal.pennywiseCareful with small amounts of money or over small matters.penopause(informal, rare) Synonym of andropause.pensative(obsolete) pensivepensioneeA person to whom a pension is paid; a pensioner.penstrokea stroke of a penpentacene(organic chemistry) A polycyclic aromatic hydrocarbon; the acene containing five fused rings.pentacube(mathematics) A polycube composed of five cubespentalene(organic chemistry) The antiaromatic bicyclic hydrocarbon consisting of two fused cyclopentadiene ringspentamine(organic chemistry) The quaternary ammonium compound [(methylimino)diethylene]bis[ethyldimethylammonium] bromide that blocks the activity of ganglionspentanone(organic chemistry) Any of three organic compounds containing five carbons and a ketone functional group.pentasomeMisspelling of pentastome.pentatone(music) An augmented sixthpentatope(geometry) Synonym of pentahedron.pentazole(inorganic chemistry) HN₅, The five-membered homocyclic compound containing five nitrogen atoms and two double bondspentenone(organic chemistry) Either of three isomeric aliphatic ketones that have five carbon atoms and one double bondpentereme(rare) A quinquereme; a pentere.pentetate(chemistry) Any salt or ester of pentetic acid.penthouse(by extension, now rare) Something forming a shelter or canopy over something; an awning, shelter, etc.penthrite(organic chemistry) pentaerythritol tetranitratepentinene(dated, organic chemistry) pentynepentoliteA composite high explosive used for military and civilian purposes.pentonate(organic chemistry) Any salt or ester of a pentonic acid.pentosaneAlternative form of pentosan.pentoside(organic chemistry) Any glycoside derived from a pentosepentoxide(inorganic chemistry) any oxide containing five oxygen atoms in each moleculepenumbraeplural of penumbrapeonylikeResembling or characteristic of a peony.peopleize(transitive) To adapt to the needs or norms of people.pepsidaseMisspelling of peptidase.peptidase(biochemistry) Any enzyme that catalyzes the hydrolysis of peptides into amino acids; a protease.peptidateA complex formed from a peptidepeptidome(biochemistry, genetics) The complete set of peptides encoded by a particular genome, or present within a particular cell type or organismpeptolideA cyclic or heteromeric depsipeptidepeptoniseAlternative form of peptonize.peptonize(physiology, biochemistry) To convert a protein into peptones under the influence of the enzyme pepsin.peptosome(biology) A spherical vesicle composed of peptidesperagrate(obsolete) To travel around or through.perborate(inorganic chemistry) Any salt, derived from borate and hydrogen peroxide, of the hypothetical perboric acid.percalineA fine kind of French cotton goods, usually of one colour.perchableSuitable for perching upon.perchance(dated or humorous) Perhaps.perchlikeResembling or characteristic of the perch fish.percolate(transitive) To pass a liquid through a porous substance; to filter.percyliteA mixture of pseudoboleite, boleite and diaboleite.perdicine(zoology, obsolete) Of or relating to the former subfamily Perdicidae, classed as the Old World partridges.peregrineWandering, travelling, migratory.perennate(botany) To survive from one growing season to the nextpereoniteAny of the segments of the pereon.peretaite(mineralogy) A monoclinic-prismatic mineral containing antimony, calcium, hydrogen, oxygen, and sulfur.perflable(obsolete) Capable of being blown through; permeable to air currents.perforate(transitive) To pierce; to penetrate.perfusateThe fluid used in perfusion.perfusiveTending to flow over, or to spread through.pergolide(pharmacology) An ergot derivative which is a dopamine agonist used chiefly in the treatment of Parkinson's disease.perhamite(mineralogy) A hexagonal-dihexagonal dipyramidal mineral containing aluminum, calcium, hydrogen, oxygen, phosphorus, and silicon.pericheteAlternative form of perichaeth.periclase(mineralogy) A cubic crystalline form of magnesium oxide (MgO).pericline(mineralogy) A form of albite exhibiting elongated prismatic crystals.pericopaeplural of pericopepericraneObsolete form of pericranium.pericycle(botany) In a plant root, the cylinder of plant tissue between the endodermis and phloem.peridiole(mycology) A lens-shaped capsule of spores that grows in cups of some kinds of fungi.peridrome(architecture) The space between the columns and the wall of the cella in an Ancient Greek or Roman templeperiegeteA writer of a periegesis.perikronePeriapsis around the planet Saturn.perilsomeCharacterised or marked by peril; perilousperinaiseMayonnaise made with peri-peri peppers.periocyteMisspelling of pericyte.periodate(inorganic chemistry) Either of two oxyanions of iodine; any salt containing these anions.periodide(inorganic chemistry) An iodide containing a higher proportion of iodine than any other iodide of the same substance or seriesperiodiseAlternative form of periodize.periodize(transitive) To divide (history) into periods.perioxideMisspelling of peroxide.periscopeA form of viewing device that allows the viewer to see things at a different height level and usually with minimal visibility.perispome(Ancient Greek grammar, of a word) Having a perispomene on the last syllable.perispore(botany) The outer covering of a spore.peristole(archaic, biology) peristalsis, especially of the intestinesperistome(botany) One or two rings of tooth-like appendages surrounding the opening of the capsule of many mosses.peristyleA colonnade surrounding a courtyard, temple, etc., or the yard enclosed by such columns.peritreme(zoology) That part of the integument of an insect which surrounds the spiracles.perlapine(pharmacology) A sedative and hypnotic drug.perlative(grammar) The perlative case, also known as the pergressive case.permafreefree of charge in perpetuity (as opposed to being free as part of a temporary giveaway)permeableAble to be permeated; absorbing or allowing the passage of fluids.permeanceA measure of the degree to which a material allows a fluid to permeate it.permittee(law) One who receives a permit.permutate(transitive) To carry out a permutation upon.permutiteAny of several artificial aluminosilicates that resemble the zeolites.persecuteTo harass with importunity; to pursue with persistent solicitations; to annoy.perselineObsolete spelling of parsley.persevere(intransitive, copulative, obsolete) To stay constant; to continue in a certain state; to remain.persiennePrinted calico or similar material.personageA person, especially one who is famous or important.personate(transitive) To fraudulently portray another person; to impersonate.personiseNon-Oxford British English standard spelling of personize.personize(archaic) To personify.persuadeeOne who is persuaded.pertinate(obsolete) pertinaciouspertusate(botany) Pierced (at the apex); perforated.perusableCapable of being perused.pervasiveManifested throughout; pervading, permeating, penetrating or affecting everything.perveanceThe relationship between current and voltage in an electron gunperxenate(inorganic chemistry) The anion XeO₆⁴⁻ formally derived from perxenic acid; any salt containing this anion.peshmergeAlternative spelling of peshmerga.pessimise(British spelling, Commonwealth) Alternative spelling of pessimize.pessimize(transitive) To take a pessimistic view of; to speak of in a negative or pessimistic way.pesthouseAn establishment which provides shelter or care to sufferers of pestilence or other contagious infections.pesticideAnything, especially a synthetic substance but also any substance (e.g. sulfur), or virus, bacterium, or other organism, which kills or suppresses the activities of pests.pestolikeResembling or characteristic of pesto.petajoule(metrology) An SI unit of energy equal to 10¹⁵ joules. Symbol: PJpetalitreA unit of volume equivalent to 10¹⁵ litres. Symbol: PlpetallikeResembling or characteristic of a petal.petallineAlternative form of petaline.petalsomeFull of petals.petalwiseIn the manner of a petal or petals.petametre(metrology) An SI unit of length equal to 10¹⁵ metres. Symbol: PmpetascaleA metric for objects on the scale of quadrillions (10¹⁵ or 1,000,000,000,000,000) of elements. Most often used for computer systems; a petascale computer system operates at speeds measured in petaflops and has memory measured in petabytes.petaurine(zoology) Relating to the possum family Petauridae.petechiaeplural of petechiapethidine(pharmacology) A synthetic compound used as a painkilling drug, especially for women in labor.petiolatepetiolated (connected to a stem by means of a petiole)petiolule(botany) The petiole of a pinna or pinnule.petrolageThe killing of mosquitos by adding petroleum to the surface of the water where they are found.petroline(organic chemistry) A paraffin obtained from petroleum that is lighter and less expensive than kerosene.petrolize(transitive) To treat (water) with kerosene in order to exterminate mosquitoes.petrukite(mineralogy) An orthorhombic-pyramidal mineral containing copper, indium, iron, silver, sulfur, tin, and zinc.petulanceChildish impatience or sulkiness; testiness.phacolite(mineralogy) A dull-coloured, lens-shaped variety of chabazite.phaeosome(microbiology) A cyanobacterium symbiont in a dinoflagellate.phagocyte(transitive) To phagocytizephagosomeA membrane-bound vacuole within a cell containing foreign material captured by phagocytosis.phagotopeMisspelling of phagotype.phagotypeA strain of bacterium that is sensitive to a certain bacteriophage.phalaropeAny of three small wading birds in the genus Phalaropus, of the family Scolopacidae, that have lobed toes.phanaeine(zoology) Any of several dung beetles of the genus Phanaeus.phanerite(geology) Evident; visible.phanquoneA polycyclic compound, 4,7-phenanthroline-5,6-quinone.phantasieObsolete spelling of fantasy.phenacene(organic chemistry) Any of a series of polycyclic aromatic hydrocarbons differing from the acenes in having a zig-zag structurephenacite(mineralogy) Alternative spelling of phenakite.phenakite(mineralogy) A trigonal-rhombohedral mineral containing beryllium, oxygen, and silicon.phenalene(organic chemistry) A tricyclic hydrocarbon consisting of a cyclohexene ring ortho- and peri-fused to naphthalenephenazine(organic chemistry) any of a class of aromatic tricyclic heterocycles used to make dyestuffsphenazone(pharmacology) A particular analgesic.phenetole(organic chemistry) ethyl phenyl etherphenicine(chemistry) A purple powder precipitated when a sulphuric solution of indigo is diluted with water.phenocideThe systematic destruction of people based upon their phenotype. cf genocidephenolasepolyphenol oxidasephenolate(chemistry) phenoxidephenolize(transitive) To treat with phenol.phenomime(linguistics) A word or phrase that mimics a certain physical form or motion.phenotypeTo evaluate or classify based on phenotype.phenoxide(chemistry) any metallic salt of a phenolphenylate(chemistry) A salt or ester of phenylic acid.phenylene(chemistry) Any of three isomeric divalent aromatic radicals derived from benzene by removing two hydrogen atoms from the ortho-, meta- or para- positions.pheremoneMisspelling of pheromone.pheromone(biology) A chemical secreted by an animal, especially an insect, that affects the development or behavior of other members of the same species, functioning often as a means of attracting a member of the opposite sex.pherotypeMisspelling of phenotype.philomene(obsolete) The nightingale.philomuse(obsolete) A lover of the Muses or poetry.phirotope(physics) A generalization of oriented matroid chirotopes for complex point configurations.phloxlikeResembling or characteristic of a phlox.phocenate(chemistry) Any salt or ester of phocenic acid.pholaditeA fossil pholad.pholerite(mineralogy, obsolete) Synonym of kaolinite.pholidote(zoology) A member of the Pholidota; a pangolin.pholourieA Caribbean snack of fried, spiced dough balls made of dhal, served with chutney.phomamide(organic chemistry) A piperazinedione present in the fungus Phoma lingamphonatomeThe cyclic movement of the forewing of insects (especially the cricket) during stridulationphonelikeResembling or characteristic of a phone, especially a cell phone.phonelineAlternative form of phone line.phonemiseNon-Oxford British English standard spelling of phonemize.phonemizeTo make phonemic; to make (something) a distinct phoneme.phonetise(transitive, linguistics) To represent by phonetic signs.phonetize(transitive) To represent (something) by phonetic signs.phonewiseIn terms or by means of the telephonephonicate(transitive, intransitive, slang, humorous, rare) To have phone sex (with someone).phonolite(mineralogy) A light-coloured rock of volcanic origin composed mostly of alkali feldspars.phonomime(linguistics) A word or phrase that mimics a sound.phonopore(historical, telecommunications) An invention allowing telephonic voice communications to be transmitted over existing Morse code telegraph infrastructure.phonotype(historical) A phonetic symbol used in phonotypy.phorocyte(cytology) A mobile cell that transports the buds of doliolidsphosaloneAn organophosphate chemical commonly used as an insecticide and acaricide.phosphane(chemistry) phosphine, PH₃phosphate(chemistry) Any salt or ester of phosphoric acid.phospheneA sensation of lights induced by mechanical, electrical, or magnetic stimulation (rather than optical) of the retina or visual cortex, or by random firing of cells in the visual system.phosphide(chemistry) Any binary compound of phosphorus, especially one in oxidation state −3.phosphine(inorganic chemistry, uncountable) A toxic gas, chemical formula PH₃.phosphite(chemistry) any salt or ester of phosphorous acidphosphole(organic chemistry) The unsaturated five-membered heterocycle having four carbon atoms, one phosphorus atom and two double bonds; an analogue of pyrrolephosphoreArchaic form of phosphor.phosphure(obsolete, chemistry) phosphidephosvette(biochemistry) Any of a class of polypeptides related to the phosvitinsphotocage(chemistry, physics) Any of several molecular species that can be activated by light; they are used especially in biochemistry to attach a molecule to a biologically active compound and then study its behaviour once activated.photocyte(cytology) A bioluminescent cellphotodopeTo dope (a semiconductor etc) by means of (laser) light.photogate(physics) A device that measures the time between events that interrupt an infra-red beamphotogene(genetics) A gene involved in photosynthesis.photoholeA small hole produced in a surface by photoelectric corrosionphotolikeResembling or characteristic of a photograph.photolyseTo cause photolysis.photolyte(chemistry) Any substance that is decomposed by photolysisphotolyzeAlternative spelling of photolyse.photositeAn individual light-sensitive element in a digital image sensor.phototubeA gas-filled electron tube that has a photosensitive cathode.phototypeA metal printing block, used in the photogravure processphotovoreA robot that is powered by solar cells and moves towards light to "feed".phrasableAble to be phrased.phthalate(organic chemistry) Any salt or ester of a phthalic acid.phthalide(organic chemistry) phthaleinphthanite(mineralogy) chertphulourieAlternative spelling of pholourie.phygocyteMisspelling of phagocyte.phylotypeA proposed stage in the development of an embryo at which those characteristics of a particular phylum develop.physalite(mineralogy) A coarse topaz.physodineA particular steroid glycoside.physonome(entomology) A blister-shaped area of damage on a leaf caused by a leaf miner.phytocide(uncommon) An agent that kills plants, such as weedkiller.phytoliteA fossil plant.phytomere(botany) A segment of the shoot of a grass; it includes the internode and leaf together with parts of the upper and lower nodes.phytonoseA disease that is transmissible from plants to animals (especially to man)phytosomeAn artificial liposome supposedly used to enhance the delivery of herbal extractspianolikeResembling or characteristic of a piano.pickpurse(obsolete) Someone who steals purses, or money from purses.picobiineAny mite of the subfamily PicobiinaepicocurieThe unit of radioactivity equal to 10⁻¹² curie: symbol pCi.picojouleOne million millionth ( 10⁻¹² ) of a joule. Symbol: pJ.picolitreOne millionth of a microlitre; 10⁻¹² litres. Symbol: pL or pl.picometre(metrology) An SI unit of length equal to 10⁻¹² metres. Symbol: pmpicoscaleOn a scale measured in picometerspicotitreAlternative form of picotiter.picramate(organic chemistry) Any derivative (equivalent to a salt or ester) of picramic acidpicramide2,4,6-trinitroaniline, an explosive compound.picrolite(mineralogy) A fibrous variety of serpentine, possibly antigorite.picroside(organic chemistry) Any of a family of iridoid glycosides isolated from Picrorhiza speciespictarnie(Scotland, obsolete) A sea bird, the great tern.picturiseNon-Oxford British English standard spelling of picturize.picturize(transitive, rare) To represent in a picture or a motion picture; to depict.pidginiseAlternative form of pidginize.pidginize(linguistics, transitive) To convert or adapt into a pidgin language.piecewiseIn terms or by means of pieces; a piece at a time.piedoucheA small pedestal used to support a bust, a vase, etc.piepoudreAlternative form of piepowder.pieridine(zoology) Of or relating to the Pieridae, a large family of butterflies.piezoconeA conical tip to a penetrometerpiezolyteAny of various compounds that stabilize proteins against high hydrostatic pressurepifarnineAn antiulcer drug.pigeonite(mineralogy) Any monoclinic pyroxene that is a mixed calcium, magnesium and ferrous silicate.pignerateAlternative form of pignorate.pignorateSynonym of pignoratitious.pikrolite(rare) Archaic form of picrolite.piledrive(construction) To use a piledriver on.piledrovesimple past of piledrivepilferageThe individual act or recurring practice of stealing items of low value, especially in small quantities, for which the legal term is petty theft.pillariseAlternative form of pillarize.pillarize(society, ergative) To divide into social pillars, in which each social group has its own social institutions.pilloriseAlternative form of pillorize.pillorize(transitive) To set in, or punish with, the pillory.pilocaineMisspelling of prilocaine.pilotableCapable of being piloted.pilsenite(mineralogy) A trigonal-hexagonal scalenohedral mineral containing bismuth and tellurium.pimecloneA psychostimulant or respiratory stimulant drug.pinbeforeObsolete form of pinafore.pinchableSuitable for being pinched.pinchlikeResembling or characteristic of a pinch.pineappleA tropical plant, Ananas comosus, native to South America, having thirty or more long, spined and pointed leaves surrounding a thick stem.pingguite(mineralogy) An orthorhombic yellowish green mineral containing bismuth, oxygen, and tellurium.pinnipedeAlternative form of pinniped.pinnulate(botany, zoology) Having pinnules.pinophyte(botany) Any gymnosperm (of the division Pinophyta)pinstripeA very thin stripe on a fabric or other surface.pinyinise(transitive) Alternative letter-case form of Pinyinise.pinyinize(transitive) Alternative letter-case form of Pinyinize.piosphere(ecology) The zone of influence of grazing on a region's vegetation and soil.pipeborneTransported through a pipe.piperidgeAlternative form of pepperidge.pipesmokeThe smoke from a pipe.pipesnakeAlternative form of pipe snake.pipestave(dated) A stave for a pipe (a type of cask).pipestoneA hard, red clay used by Native Americans for making tobacco pipes.piratableAble to be pirated.pirnabineA synthetic cannabinoid receptor ligand, developed for the treatment of glaucoma.piroctoneA drug affecting the integumentary system.pirouetteA whirling or turning on the toes in dancing, primarily in ballet.piscicide(countable) Any substance that is poisonous to fish.pisshouse(slang, vulgar) A building that houses toilets or urinals.pisswhore(slang, vulgar, derogatory) A urolagniac.pistacite(mineralogy) A green variety of epidote that is rich in ironpistaziteAlternative form of pistacite.pisterineAlternative form of pistareen.pistolade(archaic) A gunshot from a pistol.pitchableEasy to pitch (to promote, advertise, or sell).pitchlikeResembling or characteristic of pitch (the tarry substance).pitchpineAlternative form of pitch pine.pitchpipe(music) A small pipe used to set the pitch for an instrument, song etc.pitchpole(of a boat) To capsize end over end, as in heavy surf.pitchsideBy the side of a sports pitch.pitchurieAlternative form of pituri.pitiamide(organic chemistry) Any of a group of chlorolipid amides isolated from marine cyanobacteriapituicyteA small branching cell in the posterior lobe of the pituitary glandpivotableCapable of being pivoted.pivotlikeResembling or characteristic of a pivot.pixellateAlternative form of pixelate.pixelwiseIn terms of pixels; one pixel at a time.pixielikeResembling or characteristic of a pixie.pizzalikeResembling a pizza.placative(chiefly US) That placates; pacifying.placeableCapable of being placed.placebome(genealogy, medicine) A group of genes thought to affect an individual's response to placebo medication.placenameThe name of a place; a word or phrase which indicates a particular location or region.placentaeplural of placentaplainlikeResembling or characteristic of a plain (flat land with relatively little vegetation).plaintiveSounding sorrowful, mournful or melancholic.plainwareancient minimally decorated pottery found in OceaniaplaisanceObsolete form of pleasance (“pleasure ground”).planarizeto flatten, or make into a planeplancheteMisspelling of planchette.planelikeResembling or characteristic of a geometrical plane.planerite(mineralogy) A triclinic-pinacoidal mineral containing aluminum, hydrogen, oxygen, and phosphorus.planesideBeside an airplane; particularly used of baggage check or security searchesplanetreeAlternative form of plane tree (Platanus spp.).planetuleA little planet.planewaveAlternative form of plane wave.plangence(rare) Plangency.planigaleAny species of the genus Planigale of small insectivorous marsupials endemic to Australia and New Guinea.planitiaeplural of planitiaplanklikeResembling or characteristic of a plank.plankwise(of the cutting of wood) Across the grain, not parallel to it.plannableCapable of being planned.plantableSuitable to be planted.planticle(archaic) A young or small plant, or plant in embryo.plantlifePlants collectively.plantlikeHaving characteristics of a plantplantwideThroughout a plant (factory)plantwiseIn the manner of a plant (non-animal organism).planulateHaving a flattened formplaquetteA small metal tablet decorated in bas-relief, usually with a design including figures.plastique(countable) A form of physical exercise that involves rotation of the joints.plateableThat can be plated (covered with another material).platelikeHaving characteristics of a plateplatewarePlates used for serving food and dining.platewiseIn terms of plates.platinate(inorganic chemistry) Any of several oxyanions of platinum, or the salts containing these ions.platinide(inorganic chemistry) Any element in the same group as platinum in the periodic tableplatinise(chiefly UK) Alternative form of platinize.platinize(transitive) To coat with platinum.platinode(physics, dated) A cathode.platitude(countable) An often-quoted saying that is supposed to be meaningful but has become unoriginal or hackneyed through overuse.platoniseAlternative form of platonize.platonize(transitive) To explain by, or accommodate to, the Platonic philosophy.platycone(malacology) An organism or fossil with a platyconic shell, or the shell itself.platynite(mineralogy) A discredited mineral species that is a mixture of galena and laitakarite.plausableMisspelling of plausible.plausibleSeemingly or apparently valid, likely, or acceptable; conceivably true or likely.playalikeResembling or characteristic of a playa (geological feature).playframeA children's climbing frame incorporating other elements, such as roofed sections, a slide and/or swings.playhouseA venue for performing plays.playplaceA place for recreation and play.playscaleOf dolls and toys: manufactured to approximately 1/6 the size of a real person or object.playscapeA designed landscape for playplayspaceAn environment where play can take place.playstyleThe manner in which somebody plays a game.playwriteMisspelling of playwright.plazalikeResembling a plaza.pleadable(law) That may be pleadedpleasableThat may be pleased.pleasanceA pleasure ground laid out with shady walks, trees and shrubs, statuary, and ornamental water; a secluded part of a garden.pleatableAble to be formed into pleats.pleatlikeResembling or characteristic of a pleat.plebanateparish (area under the control of a parish church)plebeiate(rare, Ancient Rome) The class of plebeians or common citizens.pledgable(finance) Able to be used as a pledge, or as collateralpleiadene(organic chemistry) The tetracyclic aromatic hydrocarbon benzo(5,6)cyclohepta(1,2,3-de)naphthaleneplemochoe(historical) An Ancient Greek pottery vessel with a high foot supporting a wide bowl.plenilune(poetic) The full moon.plenitudeFullness; completeness.pleonaste(mineralogy) A black variety of spinel.plexinome(The analysis of) all the plexins of an organism.plicature(archaic outside sciences) A doubling; a fold; a plication.plinthiteA form of clay that is rich in iron and poor in humusplocinineA particular steroid glycoside.plocosideA particular steroid glycoside.plonkable(Internet slang) Capable or worthy of being ignored or placed on a kill file.plottableAble to be plotted or surveyed.plowhorseA horse who pulls a plow.plowshare(American spelling) Alternative spelling of ploughshare.pluckableThat may be plucked.pluggableCapable of being plugged, or plugged in, especially in reference to optional components of software.plumbableCapable (as depths) of being plumbed.plumblineAlternative spelling of plumb line.plumelikeResembling or characteristic of a plume.plumosite(mineralogy, dated) jamesonite.plumuloseHaving hairs branching out laterally, like the parts of a feather.pluraliseAlternative form of pluralize.pluralize(transitive, grammar) To make plural.plurifine(mathematics) affine in multiple waysplushblueAny of various lycaenid butterflies of the Indomalayan genus Flos.plushlikeResembling or characteristic of plush.plutonate(inorganic chemistry) Any oxyanion of plutonium; any salt containing such an anion.poachableCapable of being poached, or stolen.pochoximeAny of a group of inhibitors of heat shock proteins based on radicicol.podophageAny bacteriophage of the family PodoviridaepodophileA foot fetishist; one who has a foot fetish.podoscopeA device used to visualise pressure areas on the soles of the feet.podsolizeAlternative form of podzolize.podzolize(transitive) To transform into podzol.poetesqueResembling or characteristic of a poet or poetry.poeticise(British spelling) Alternative form of poeticize.poeticize(transitive) To make poetic, or express in poetry.poeticuleA poetaster; a bad poet.pogoniatebearded, barbatepoignancePoignancy; the quality or state of being poignant.pointableCapable of being pointed, or turned to face something.pointelleA type of knit fabric that contains a pattern of open spaces.pointlikeResembling a pointpointwise(mathematics) Occurring or true for each point of a given set.poisonpieA mushroom of the genus Hebelomapoissarde(now historical) A fishwife, especially in France; specifically, any of the Parisian fishwives or market-women who led riots during the French Revolution.poiveradeMisspelling of poivrade.pokerlikeResembling or characteristic of a poker (metal rod).polepieceA structure composed of material of high magnetic permeability that serves to direct the magnetic field produced by a magnet.polianite(mineralogy) manganese dioxide, occurring in hard tetragonal crystalspolistineAny of the wasps of the subfamily Polistinae.politesseCivility, politeness, courtesy or gallantry; genteel politeness or an instance of this.politiqueObsolete form of politic.polkalikeAlternative spelling of polka-like.pollenateAlternative form of pollinate.polleniseAlternative form of pollenize.pollicateTo gesture with the thumb.pollinateTo apply pollen to (a stigma).pollinizeAlternative form of pollenize.pollinose(zoology) Having the surface covered with a fine yellow dust, like pollen.pollucite(mineralogy) A colorless transparent mineral of the zeolite family consisting of hydrous cesium aluminum silicate and occurring massive or crystallizing in cubes.pollutiveThat causes environmental pollution; pollutingpolluxite(mineralogy) polluxpolonaise(dance) A stately Polish dance in triple time and moderate tempo.polthogue(Ireland) A blow; a smack.polumatheAlternative form of polymath.polverine(uncountable) Glassmaker's ashes; a kind of potash or pearlash, brought from the Levant and Syria, used in the manufacture of fine glass.polyabusedrug abuse of more than one kind of drugpolyacene(organic chemistry) An acene having so many rings it may be considered to be a polymerpolyamide(organic chemistry) Any of a range of polymers containing amide (or peptide) repeat units; examples include proteins and nylon.polyamine(organic chemistry) Any compound having more than one amino functional group; especially such compounds formed by decomposition of proteins, and especially those that have more than two amino groups.polyangle(rare, mathematics) polygonpolyarene(organic chemistry) Any polycyclic aromatic hydrocarbonpolyaxoneDated form of polyaxon.polyazide(inorganic chemistry) Any compound having multiple azide groups; they are exceptionally explosivepolyazole(organic chemistry) A polymer composed of azole unitspolybraneMisspelling of polybrene.polybrene(organic chemistry) A cationic polymer, hexadimethrine bromide, used to increase the efficiency of infection of certain cells with a retrovirus in cell culture.polycheteAny of many annelid worms, of the class Polychaeta, such as the lugworm; they have a segmented body with pairs of bristles on each segment.polyclone(biology) A discrete area of tissue composed of several different clones of cellspolycrase(mineralogy) A black or brown amorphous metallic complex uranium yttrium oxide mineral, found in granitic pegmatites.polycycle(radar) A waveform with multiple cycles of the carrier within the pulse envelope.polydrupe(botany) Any fruit that is an aggregate of multiple drupespolyenone(organic chemistry) Any ketone derived from a polyenepolyenyne(organic chemistry) A polymer formed from enyne componentspolyhouseA polytunnel; a greenhouse or tunnel made of polyethylene, used to grow plants that require a higher temperature and/or humidity.polyimide(chemistry) Any polymer whose monomers are imides; used to make high-temperature resinspolylogueA speech delivered by several persons.polymatheAlternative form of polymath.polymetre(music) The use of different metres or time signatures either simultaneously or in successionpolyoxide(chemistry) A polymeric oxidepolyphageAny animal which can eat a variety of food; an omnivorepolyphase(electricity) Of, pertaining to, or involving multiple alternating currents that have the same frequency but differ in phase.polyphene(organic chemistry) Any aromatic hydrocarbon consisting of fused benzene ringspolyphite(mineralogy) A mineral containing sodium, calcium, titanium, silicon, oxygen, phosphorus and fluorine, found in Russia.polyphoneA letter, or combination of letters, that can be pronounced in two or more different wayspolyphore(botany, mycology) A receptacle which bears many ovaries.polyphote(dated) Pertaining to or designating arc lamps constructed so that more than one can be used on a single circuit.polyscopeA lens that has multiple facets and forms multiple images.polyspike(pathology) Any of a series of multiple, repetitive spikes found in the EEG of people with epilepsypolysporeAny of a group of twelve to sixteen spores present in some red algaepolystele(botany) a segment of plant stem which is characterised by possession of more than a single stele.polystome(zoology) Any animal with many mouths.polystoneA mixture of polyurethane resin and other additives meant to produce a stone-like appearance.polystyle(archaic, architecture) Having many columns; said of a building, especially of an interior part or court.polythene(organic chemistry) Synonym of polyethylene.polytrodeAn array of many electrodespolytrope(mathematics) A particular solution to an equation concerning self-gravitating, polytropic fluidpolzenite(mineralogy) A melilitite that contains haüyne.pomophobeOne who fears, dislikes, or hates postmodernism and/or postmodernists.ponderate(intransitive) To have weight or influence.ponderize(intransitive, colloquial) To ponder.pondokkieIn Africa, a primitive makeshift shelter, often made with iron or tinpondscapeThe "landscape" of a pondpondspiceLitsea aestivalis, an American shrub of the laurel family, growing in ponds and swamps.pontifice(archaic) Bridgework; structure or edifice of a bridge.poolhouseA structure containing equipment used for a swimming pool.poolscapeA landscape dominated by a pool.poopsicle(informal) Frozen excrement.poorhouseA charitable institution where poor or homeless people are lodged.poppylikeResembling a poppy (flower).poquelayeA dolmen, cairn or similar ancient structure on the island of Jersey.poramboke(India) Land belonging to the government, on which no revenue is assessed.porampokeAlternative form of poramboke.porbeagleA large pelagic predatory shark, Lamna nasus, of the Atlantic.porchlikeResembling or characteristic of a porch.porcicide(very rare) The killing of a pig or pigs.porcpisceObsolete spelling of porpoise.porcupineAny of several rodents of either of the taxonomic families Hystricidae (Old World porcupines) or Erethizontidae (New World porcupines), both from the infraorder Hystricognathi, noted for their sharp spines or quills, which are raised when the animal is attacked or surprised.porkypinePronunciation spelling of porcupine.pornocore(music) A style of hip-hop music with sexually explicit themes.pornscapeA part of a city where the sale of pornography is concentrated.porophore(biology) Any structure that supports a poreporoscopeA device for measuring porosity.portatile(obsolete) portableportative(now rare) Portable.portcluseObsolete form of portcullis.porterage(uncountable) The carrying or transportation of goods by a porter (“person who carries luggage and related objects”) or other person.portgreve(obsolete, UK) Synonym of portreeve.porthouseA building that contains the offices of officials responsible for running a port, space for customs, etc.portrayee(rare) One who is portrayed.portreeveA borough-reeve: an office equivalent to a mayor (historical) in several major English towns or (dialect) in various minor boroughs of Wales and Southwest England.porwiggleAlternative form of polliwog.posigrade(aerospace, astronautics) A small rocket that gives additional forward thrust.pospolite(historical, military) A former militia in the Kingdom of Poland and the Polish–Lithuanian Commonwealth, consisting of the gentry, which, was summoned to defend the country in the event of an invasionpossessee(grammar) Verb complement in some languages or some constructions of a given language; the noun which is possessed.postacuteAfter an acute condition (disease or situation).postambleA short concluding statement or remark, especially summarizing a formal document or statute.postbingeFollowing a binge, especially a drinking bingepostcavaeplural of postcavapostdrome(pathology) The set of symptoms that persist after a condition (typically a migraine) has passed.posteriseNon-Oxford British spelling of posterize.posterizeTo inadvertently or intentionally reduce the number of colours in (a photograph or other image), changing a continuous gradation of tone to several regions of fewer tones with abrupt changes from one tone to another.postflameAfter the formation of a flame.posthaste(formal, dated) Quickly, as fast as someone travelling post; with great speed.posthorseA horse ridden by a postrider to carry mail.posthouse(film, television) A company that carries out post-production.postjudgeUsed to contrast with "prejudge": To judge after the fact.postobese(medicine) No longer obese.postplace(transitive) To place afterward.postpulseFollowing a pulsepostscore(transitive) To provide (a film, etc.) with a musical score after its development.postslopeAt the end of a slopepoststateExisting after the state.posttrade(finance) After a trade.postulateA fundamental element; a basic principle.posturiseAlternative spelling of posturize.posturize(intransitive) To posture.postwhore(Internet slang, derogatory) A message board user who regularly posts comments usually seen as useless, like "me too", the purpose being to accumulate large numbers of posts in a short amount of time, either for bragging rights or to take advantage of certain board features that reward high post counts.potasside(chemistry) An alkalide with potassium as the anion.potentateA powerful leader; a monarch; a ruler.potentiseAlternative form of potentize.potentite(historical) An explosive used in blasting.potentize(transitive) To make potentpotestate(obsolete) A chief ruler; a potentate.poticarieObsolete form of apothecary.potoroineAny small marsupial of the family Potoroidaepotosiite(mineralogy) A triclinic-pinacoidal white mineral containing antimony, iron, lead, sulfur, and tin.potycaryeObsolete form of apothecary.pouchlikeResembling or characteristic of a pouch.poudretteThe contents of a dry closet, treated for use as manurepoudreuse(historical) A kind of dressing table with several compartments and a mirror.poundable(slang, vulgar) Sexually desirable.poundcakeAlternative spelling of pound cake.pourboireA tip (extra money given to e.g. a waiter in appreciation of service), especially in French contexts.poussetteA movement, or part of a figure, in the contradance.powderiseAlternative spelling of powderize.powderize(transitive) To reduce to powderpowelliseAlternative form of powellize.powellite(mineralogy) A tetragonal-dipyramidal mineral containing calcium, molybdenum, and oxygen.powellize(transitive) To preserve (wood) by saturating it with a solution of beet sugar and then drying it with artificial heat.powerableCapable of being powered.powerbaseAlternative form of power base.powerlike(mathematics, uncommon) Of or resembling power or the use of power.powerlineAlternative form of power line.powermoveAlternative form of power move.powersome(dialect) Characterised or marked by power; powerful.powsowdieA Scottish broth made from a sheep's head, often with other ingredients such as the sheep's trotters, dried peas, and barley.practibleAble to be put into practice; feasible.praeambleObsolete form of preamble.praemorseAlternative form of premorse.praisableFit or able to be praised; praiseworthy; commendable.pranksome(dated, poetic) Characterised by pranks or pranking; mischievous; prone to pull pranks.prawnlikeResembling or characteristic of a prawn.prazitoneA barbiturate derivative.preactiveRelating to action taken as a result of a predicted future activitypreassume(transitive) To assume in advance; to presume.prebattleBefore a battle.prebubbleBefore a financial bubble.precanineIn front of a canine toothprecativeResembling or pertaining to an entreaty.precepteeOne who undergoes instruction or supervision by a preceptor.prechargebefore a chargeprechoiceBefore making a choice.prechoose(transitive) To choose in advance.precipiceA very steep cliff.precocene(organic chemistry) A chromene, 7-methoxy-2,2-dimethyl-3-chromene, that inhibits juvenile hormone biosynthesis in some insectspreconiseAlternative form of preconize.preconizeTo proclaim in public; especially (of the Pope) to announce the appointment of a bishop.precourseBefore a course, such as of training or medical treatmentprecrease(transitive) To crease in advance.predativePertaining to predation or a predator; predatory.predebatePrior to a debate.predecideTo decide in advancepredecreeBefore a decree.predefine(transitive) To define in advance.predegreePrior to an academic degree.predevote(obsolete, nonce word, poetic) predestinedpredicate(grammar) The part of the sentence (or clause) which states a property that a subject has or is characterized by.predilateTo dilate prior to another operationpreengage(transitive) To engage previously.preexcite(transitive, medicine) To excite earlier than usual.prefamineBefore the Great Irish Famine.prefigure(often in a Biblical context) To show or suggest ahead of time; to represent beforehand.prefinite(obsolete) Predetermined.prefreeze(transitive) To freeze in advance.pregavagePrior to gavagepregenome(genetics) A collection of pregenomic RNApregnablevulnerable to attackpregnanceObsolete form of pregnancy.pregoniteEither of a pair of terminalia anterior to the postgonites of a dipteranpregreaseTo grease something prior to use or assemblypregrooveA premolded spiral groove in an optical disc, used to guide the laser beam when the disc is read or written.preimbibeTo imbibe prior to some other actionpreimmune(medicine) Preceding an immune responsepreimposeTo impose ahead of time.preinduceTo induce in advancepreionize(physics) To ionize in advance of another processprejudice(countable) An adverse judgment or opinion formed beforehand or without knowledge of the facts.prejudizeObsolete form of prejudice.prelatiseAlternative form of prelatize.prelatize(Christianity, intransitive) To uphold or encourage prelacy; to exercise prelatical functions.prelatureprelates in generalprelocate(transitive) To locate in advance.preludize(archaic) Synonym of prelude (“introduce something as a prelude”).prelunate(anatomy) In front of the lunate sulcusprelusiveActing as a prelude; preliminary.prematureOccurring before a state of readiness or maturity has arrived.premunireAlternative form of praemunire.premutateTo mutate prior to some other operationprenazoneThe drug feprazone.prenoticeAlternative spelling of pre-notice.prenubileNot yet nubile.prenylate(transitive, chemistry) To subject to prenylationprenylome(biochemistry, genetics) The complete set of prenylated compounds associated with a particular genome.preparadeBefore a parade.preparate(rare, obsolete or non-native speakers' English) To prepare.prepoliceBefore the creation of a police force.preramble(humorous, uncommon) preamblepreremoteMore remote in previous time or prior order.presbyope(medicine) One who has presbyopia: a farsighted personprescribe(medicine) To order (a drug or medical device) for use by a particular patient (under licensed authority).presenileBefore the onset of senility.presenteeA person who is presented (e.g. to a benefice), or to whom an award is given.presettle(transitive) To settle in advance.presomitePrior to the formation of somitespressableCapable of being pressed.presscakeAlternative form of press cake.presstimeAlternative form of press time.prestable(dated, Scotland, rare) payableprestrikeBefore a strike (work stoppage as protest).prestroke(pathology) Occurring before a strokepretangleA group of cytoplasmic neurons that will form into a fibril, typically in Alzheimer's diseasepretenurePrior to the establishment of tenurepreterite(grammar, of a tense) Showing an action at a determined moment in the past.pretotype(neologism) A model of product using the smallest possible amount of resources.pretriageBefore a triage phase.pretulite(mineralogy) A tetragonal-ditetragonal dipyramidal pale pink mineral containing oxygen, phosphorus, and scandium.previableNot yet viable.previsage(transitive) To envisage in advance; to foresee.previsive(archaic) Pertaining to prevision or foresight.prezizane(biochemistry) A tricyclic terpene found in agarwood.prezygoteAn egg cell prior to being fertilizedpriceableCapable of being priced.pricewiseIn terms of price.prickette(slang, derogatory) A woman or girl who is unpleasant, rude or annoying.prickface(derogatory, slang, vulgar) A term of abuse.pridefineAn antidepressant drug, never marketed.priderite(mineralogy) A tetragonal-dipyramidal mineral containing aluminum, barium, iron, oxygen, potassium, sodium, and titanium.pridesomeCharacterised or marked by prideprifeloneA nonsteroidal anti-inflammatory drug.primativeObsolete spelling of primitive.primatureMisspelling of premature.primerole(obsolete or poetic) A primrose.primetimeAlternative form of prime time.primexine(botany) The first part of the exine to be formedprimidone(pharmacology) An anticonvulsant drug chemically related (and partially metabolized) to phenobarbital, used in the treatment of epilepsy and essential (idiopathic) tremor.primitiaeplural of primitiaprimitive(linguistics) An original or primary word; a word not derived from another, as opposed to derivative.primocane(botany, agronomy) A fruit cane in its first year of growth, especially that of a bramble.primosome(biochemistry, genetics) A complex of proteins required for the initiation of bacterial DNA synthesisprimulineArchaic form of primulin.princesse(fashion) Being or relating to a princesse dress.principleA fundamental assumption or guiding belief.prinomideA nonsteroidal anti-inflammatory drug.printableWorthy or capable of being printed.printlikeResembling or characteristic of print.prionlikeSimilar to a prion.priseableObsolete form of prizable.prismlikeResembling or characteristic of a prism.privatiseNon-Oxford British English standard spelling of privatize.privativecausing privation; deprivingprivatize(economics) To release government control (of a business or industry) to private industry.privilege(ecclesiastical law, now chiefly historical) An exemption from certain laws granted by the Pope.prizeableAlternative form of prizable.prizelikeHaving characteristics of a prize.proactiveActing in advance to deal with an expected change or difficulty.probative(formal, chiefly law) Tending to prove a particular proposition or to persuade someone of the truth of an allegation.probeableAble to be probed.probelikeResembling a probe (instrument for probing).probesome(rare) Characterised or marked by probing; apt to probeprocedureA particular method for performing a task.procerite(zoology) The segment next to the flagellum of the antennae of crustaceans.processeeOne who undergoes a process.prochoiceAlternative spelling of pro-choice.proclaimeObsolete spelling of proclaim.prococene(organic chemistry) Either of a group of chromenes produced by some plants as a natural insecticideprocreate(transitive) To beget or conceive (offsprings).procymateA sedative and anxiolytic drug derived from carbamate.prodigate(archaic, transitive) To squander.prodipineAn antiparkinsonian drug.prodocyteMisspelling of podocyte.produsageUser-driven content creation taking place over computer networks and blurring the traditional boundaries between consumption and production.proenzyme(biochemistry) Any inactive precursor of an enzyme that is converted to an enzyme by proteolysis; a zymogen.profanate(obsolete) To profane; to make profane.profanize(transitive) To make profane.profinite(mathematics) Describing certain topological groups formed from finite groupsprofusive(obsolete) profuse; lavish; prodigalprogabide(pharmacology) An analogue and prodrug of gamma-aminobutyric acid, used in the treatment of epilepsy.progenate(rare) To have children.progenome(genetics) An RNA transcript of a genomeprogenote(biology, evolutionary theory) Any (hypothesised) primordial organism in which the relationship between genotype and phenotype was still evolving.programmeBritish, New Zealand, and India standard spelling of program.prolamine(biochemistry) any of a class of proteins, high in proline, found in the seeds of cerealsprolative(grammar) extending or completing a predicationproleague(historical) Supporting the League of Nations.prolegate(Ancient Rome) The deputy or substitute legate.prolicide(uncountable) The crime of destroying one's offspring, either in the womb or after birth.prolidase(biochemistry) A cytosolic dipeptidase that hydrolyzes dipeptides with proline or hydroxyproline at the carboxy terminus (but not Pro-Pro), important in collagen metabolism.prolinaseA particular enzyme that catalyses the hydrolysis of dipeptides.prolinate(organic chemistry) Any salt or ester of prolineprologiseAlternative form of prologuize.prologizeAlternative form of prologuize.promasineAlternative form of promazine.promazine(pharmacology) A phenothiazine antipsychotic, with the chemical formula C₁₇H₂₀N₂S.promenade(formal) A prom (dance).promisseeAlternative form of promisee.promizoleA drug used to treat leprosy.promocodeAlternative spelling of promo code.promotiveTending to promoteprompture(obsolete) suggestion, incitement, or promptingpronasale(anatomy) The tip of the nose.pronglikeResembling or characteristic of a prong.pronounce(transitive) To declare formally, officially or ceremoniously.prooflike(numismatics) Of a coin: highly reflective, like the first batch struck from a new die.propagate(transitive, of animals or plants) To cause to continue or multiply by generation, or successive production.propagule(biology) A reproductive particle released by an organism in order to propagate itself, by means such as dispersal or infection, to the next stage in its life cycle. E.g., seeds, spores, endospores, microbial cysts, etc.propanone(chemistry) The systematic name of the simplest ketone with formula C₃H₆O, usually called acetone.propazineA particular triazine herbicide.propenone(organic chemistry, in combination) Any unsaturated ketone of general formula R-CO-CH=CH-R^'properate(obsolete) To hasten or press forward.propertieObsolete spelling of property.propidine(organic chemistry) The divalent radical CH₃-CH₂-CH< analogous to ethylidene; propylidenepropodite(zoology) The sixth joint of a typical leg of a crustacean, usually the penultimate joint.propogateMisspelling of propagate.propolize(transitive) Of honeybees, to apply propolis to (something).propoxateA particular sedative and hypnotic drug.propretieObsolete form of property.propylateSynonym of propionate.propylene(organic chemistry) The organic chemical compound propene. An alkene which is a colorless gaseous (at room temperature and pressure) hydrocarbon with the chemical formula C₃H₆.propylite(mineralogy) A form of andesite modified by hydrothermal processes.proregime(politics) In favor of a regime.prorogate(politics) to prorogueproscribe(transitive) To forbid or prohibit.prosecute(transitive, law) To start criminal proceedings against.proselikeResembling prose.proselyteOne who has converted to a religion or doctrine, especially a gentile converted to Judaism.prosemite(uncommon) Someone who favors Semitism.proseuche(religion) A place of prayer; among the Jews, one that was not a synagogue, or the temple, usually roofless.proseukheAlternative form of proseuche.prosewiseIn terms of prose, as opposed to poetry.prosodeme(linguistics) A phoneme that extends over more than one segment of soundprosomereAny of the six subdivisions thought to compose the embryonic forebrainprosomiteThe somite of a prosomeprosopyleA pore, in some sponges, that traps food particlesprostrateLying flat, face-down.protamine(biochemistry) Any of various strongly basic proteins of relatively low molecular weight that are rich in arginine and are found associated especially with DNA in place of histone in the sperm cells of various animals (such as fish).protanopeA person who has protanopiaprotasite(mineralogy) A monoclinic-domatic light orange mineral containing barium, hydrogen, oxygen, and uranium.protecteeOne who is being protected.protesomeMisspelling of proteasome.protocone(anatomy) A cusp in the corner of an upper molar tooth in mammals.protogine(geology) A form of granite containing silvery flakes of talc or similar minerals.protoheme(biochemistry, followed by a Roman numeral) A synonym for any of several hemes (followed by a letter)protolyseAlternative form of protolyze.protolyze(chemistry) To cause or to undergo protolysis.protomite(microbiology, ichthyology) An immature or beginning form of a tomite.protonate(chemistry, transitive) To add one or more protons to (a molecule, ion or radical).protonizeSynonym of protonate.protopine(biochemistry) A benzylisoquinoline alkaloid occurring in plants of the family Papaveraceae that has partial agonism for mu and delta opioid receptors, these effects are nalaxone reversible.protopope(Christianity, Eastern Orthodoxy, Byzantine Catholicism) A protopresbyterprotoporeA structure in a cell membrane that develops into an ion channel poreprotosite(biochemistry) Any part of a biomolecule that has the potential to be a site for the attachment of another oneprotosomeThe proboscis of hemichordate animals.prototile(geometry) Any of the minimal set of non-congruent shapes from which a larger set of shapes, some of which may be congruent, can be produced.prototypeAn early sample or model built to test a concept or process.protoxide(inorganic chemistry) Any of a series of oxides of a particular metal that has the fewest atoms of oxygen per moleculeproudsomeCharacteristically proud; pridesomeproustite(mineralogy) A mineral, Ag₃AsS₃, often found with pyrargyrite in silver veins.proveableAlternative form of provable.provedoreA person or business which provides supplies, particularly food and beverages.providoreOne who makes provision; a purveyor.proviromeThe genomes of all the proviruses that inhabit a particular organism or environmentprovocate(now nonstandard and non-native speakers' English) To provoke.provoloneA semi-hard cheese made of whole milk from cows. It comes primarily from Southern Italy.proxazoleA drug used for functional gastrointestinal disorders.proximateClose or closest; adjacent.proxisomeMisspelling of peroxisome.proxygene(genetics) A full-length protein that has high local similarity with a specific short length of nucleic acid.prozapineAn antispasmodic drug.prozoniteThe anterior tergite of a diplosomiteprozymite(Roman Catholicism, historical, derogatory) One who administers the Eucharist with leavened bread, in particular a member of the Eastern Orthodox Church.prudelikeResembling or characteristic of a prude; prudish.prudhommeAlternative form of prud'homme.prunelikeResembling or characteristic of a prune.prurienceThe quality of being prurient.prussiate(chemistry, obsolete) A ferricyanide, ferrocyanide or cyanide.psarolite(paleontology) A silicified stem of tree fern, found in abundance in the Triassic sandstone.psilocybeAny mushroom of the genus Psilocybe.psoraleneAlternative form of psoralen.psychachepsychological painpsytranceA genre of trance music characterized by hypnotic arrangements of synthetic rhythms and complex layered melodies created by high-tempo riffs.pteridine(organic chemistry) A bicyclic aromatic heterocycle consisting of fused pyrimidine and pyrazine rings.pteropineof or pertaining to flying foxes (bats of the genus Pteropus).pterygoteAny insect of the order Pterygota.ptilolite(mineralogy, dated) Mordenite; once designated as a new mineral, it was discovered to be identical with mordenite.publicate(rare, transitive) To publish or make publicly known.publiciseTo make widely known to the public.publicize(American spelling) Alternative spelling of publicise.publisheeOne to whom something is published; a consumer of a publication.pucherite(mineralogy) vanadate of bismuth, occurring in minute reddish-brown crystalspuebloize(transitive) To convert into a pueblo.pugillare(historical, in Ancient Rome) A wooden writing tablet, coated with wax, used with a stylus.puissancepower, might or potencypukateineAn alkaloid found in the bark of the pukatea.pukwudgieA creature in Algonquian (Lenape and Wampanoag) folklore, typically said to be a short humanoid with magical abilities; the creatures were once friendly to humans but have become malicious tricksters.pulaskite(mineralogy) A massive course-grained rock composed chiefly of feldspar with some other minerals such as hornblende and biotite.pullicateArchaic spelling of pullicatpullicideThe killing of a chicken.pullulateTo multiply rapidly.pulmonate(anatomy) Having lungs or similar organs.pulpitizeTo preach or lecture as if from a pulpit.pulsatilePulsating; that pulses.pulsativeCharacterised by pulsing or beating; throbbing.pulselikeResembling or characteristic of a pulse.pulsotype(biology) Any distinct strain of bacteria separated by pulsed-field gel electrophoresispulverate(transitive) To beat or reduce to powder or dust; to pulverise.pulverine(dated) ashes of barillapulverise(transitive) To render into dust or powder.pulverizeAmerican and Oxford British spelling of pulverise.pulvinate(architecture) Curved convexly or swelled.pulvinone(organic chemistry) An aromatic hydroxy-butenolide, derivatives of which occur naturally in certain fungi and moulds.pumphouseA building containing pumping equipment; thus:punchableSuitable for being punched or perforated.punchlikeResembling a punch (tool for punching holes).punchlineAlternative spelling of punch line.punctuate(transitive) To add punctuation to.punkitude(informal) The quality or state of being a punk; punkishness.pupariateTo undergo pupariationpupillage(law) A form of apprenticeship for prospective barristerspupillate(zoology) Having a central spot of another color, like the pupil of the human eye.puppetize(transitive) To reduce (a person) to a puppet or mouthpiece for oneself.puppylikeResembling a puppy.purcelaneObsolete form of purslane.purgative(capable of) purgingpurgeableCapable of being purged.purposiveServing a particular purpose; useful; adapted to a given purpose, especially through natural evolution.purpurateOf a purple colour.purpurineAlternative spelling of purpurin.purpurite(mineralogy) A manganese phosphate mineral with a striking purple colour.purpurize(transitive, archaic) To make (something) purple-coloured.purselaneAlternative spelling of purslane.purselikeResembling or characteristic of a purse.pursuableAble to be pursued or followed.pursuanceA search for something; a pursuit or quest.purulenceThe condition of containing or discharging pus.pussyhole(vulgar, slang) The vagina.pussylike(slang, vulgar) Resembling the female genitalia.pustulate(ambitransitive) To form, or be formed into, pustules.pustuloseAlternative form of pustulous.putrilage(archaic) Something undergoing, or having undergone putrefaction.puttylikeResembling putty or some aspect of it.pycnosomeA person with a stocky bodypygophileA person with an intense desire and/or sexual preference for the human buttocks.pygophoreSynonym of pygofer.pygostyleThe plate supporting the tail-feathers in birds, formed from fused vertebrae.pyknocyteA distorted, contracted or otherwise malformed red blood cell.pyknosomeAlternative form of pycnosome.pylonlikeResembling or characteristic of a pylon.pyreneite(mineralogy) A greyish-black garnet.pyrindene(organic chemistry) Either of two isomeric bicyclic heterocycles consisting of a cyclopentane ring fused to that of pyridinepyrophane(mineralogy) A mineral which is opaque in its natural state, but is said to change its color and become transparent by heat.pyrophileAn organism that thrives in the presence of fire.pyrophobeA person who is afraid of fire.pyrophone(music) a musical instrument in which the sound is produced by flames of gas in tubes of different lengthpyrophyte(biology) Any plant that is resistant to fire, or that needs fire to propagatepyroprobeA kind of pyrolyser based on resistive heating, used in mass spectrometry.pyroscope(dated, physics) An early form of pyrometer used to measure high temperatures.pyrothereAn extinct South American mammal, of the order †Pyrotheria, that resembled elephants.pyrraline(organic chemistry) a heterocyclic aldehyde and primary alcohol with formal name 5-(hydroxymethyl)-1H-pyrrole-2-carbaldehydepyrrolide(organic chemistry) The univalent anion derived from pyrrolidine by loss of a hydrogen ionpyrroline(organic chemistry) Any of three isomeric monounsaturated heterocycles having a five-membered ring and one nitrogen atom C₄H₇N; any derivative of these compoundspyrrolone(organic chemistry) Any heterocyclic ketone derived from pyrrole