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packetisationAlternative form of packetization.packetization(signal processing) The act or process of bundling data into packets according to a specific protocolpaediatrician(Commonwealth) Standard spelling of pediatrician.paenibacillinA particular bacteriocin produced by the bacterium Paenibacillus polymyxa.palaeoaeolian(geomorphology, climatology) Relating to, or caused by, ancient windspalaeomonsoonAlternative spelling of paleomonsoon.paleoamericanAlternative form of Paleo-American.paleopositionThe geographical position of a place in prehistory (before being subjected to continental drift)paleosouthernRelating to the south as it was in prehistoric timespalettization(computer graphics) The act or process of palettizing.palingenesian(rare) Relating to palingenesis.palletisation(British spelling) Alternative spelling of palletization.palletization(logistics) The act or process of palletizing.palmification(botany, historical) The fertilization of date palm trees by suspending male clusters from wild dates over the females.palmitylation(organic chemistry) modification by reaction with a palmityl grouppalsificationThe development of palsy.paltensimycinMisspelling of platensimycin.pancreastatinAn oligopeptide, present in the porcine pancreas, that regulates pancreatic secretionpancrustaceanAny animal of the clade Pancrustacea.pandiculationA stretching and stiffening of the trunk and extremities, as when fatigued and drowsy or on waking, often accompanied by yawning.panharmoniconA mechanical musical instrument that could imitate various instruments and generate sound effects.panicstrickenAlternative form of panic-stricken.pansification(informal, derogatory) The process of becoming weak, timid, or effeminate.pantagruelianHuge, gigantic, enormous.parabutoporin(biochemistry) A cationic amphipathic antibiotic peptide present in scorpion venomparachromatin(biochemistry) Synonym of linin (“material that connects the chromatin granules”).parainfection(medicine) A condition resembling an infection but not caused by an infectious agent.paralipomenon(biblical) Either of the Books of Chronicles in the Old Testament.paramonomycinMisspelling of paromomycin.paraneopteranAny insect of the superorder Paraneoptera.parareptilian(zoology) Of or relating to the Parareptilia.pararescuemanA soldier who parachutes into hostile territory to rescue fellow soldiers.pararescuemenplural of pararescuemanpararosanilinAlternative form of pararosaniline.parasecretionA secretion abnormalityparasyntheton(grammar) A parasynthetic compound.paratriathlon(sports) A variant of the triathlon for athletes with a range of physical disabilities.parcelizationAlternative form of parcellization.pareiasaurianAny extinct parareptile of the clade †Pareiasauriaparencephalon(anatomy) The cerebellum.parentizationSynonym of parentification.participationThe act of participating, of taking part in something.pascalizationA method of preserving and sterilizing food through the use of high pressure.passivisation(British) Alternative form of passivization.passivization(US, grammar) The process of rendering into the passive form.pataphysicianA person involved in pataphysics.pathoadaptionMisspelling of pathoadaptation.pathofunctionA pathogenic functionpatrocination(obsolete) The act of patrocinating or patronizing.patronisation(British) Alternative spelling of patronization.patronizationpatronizing behaviour or talkpauperisationAlternative spelling of pauperization.pauperizationThe act or process of reducing to poverty.pedicellationThe formation of a pedicel or peduncle.pedinophyceanAny green alga of the class Pedinophyceae.pediplanation(geology) The formation of pediplains by coalescence of pedimentspedoturbationAny soil turbation that is not caused by illuviation.pedunculationThe condition of being pedunculatepeerification(parenting) Treatment of one's child in a way considered more proper to an adult peer-to-peer relationship.pegcetacoplanA medication used to treat paroxysmal nocturnal hemoglobinuria.peginterferonA pegylated interferon.pegmatizationThe process of pegmatizing.pelagophyceanAny marine alga of the class Pelagophyceaepellamountainwild thyme (Thymus serpyllum)pelletisationAlternative form of pelletization.pelletizationThe act or process of pelletizing.pelycosaurian(zoology) Belonging to the Pelycosauria.pendimethalinThe herbicide 3,4-dimethyl-2,6-dinitro-N-pentan-3-yl-aniline.pendunculagin(organic chemistry) A particular ellagitannin.peneplanation(geology) The formation of a peneplain.pennaraptoranAny member of the clade Pennaraptora, which includes birds and some of their extinct maniraptoran relatives.pennatulacean(zoology) A member of the Pennatulacea; a sea pen.pentacontagon(geometry) A 50-sided polygon.pentadecanoin(organic chemistry) Any glyceride of pentadecanoic acidpentamutation(genetics) A group of five mutationspepsinizationTreatment with pepsinpeptidoglicanMisspelling of peptidoglycan.peptidoglycanA polymer of glycan and peptides found in bacterial cell wallspeptonisationAlternative form of peptonization.peptonization(physiology, biochemistry) The conversion of a protein into peptones under the influence of the enzyme pepsinperambulation(law) An English legal ceremony in which an official from a town or parish walks around it to delineate and record its boundaries.percunctation(rare) Obsolete spelling of percontation.peregrination(countable, chiefly theology, archaic) A person's life regarded as a temporary stay on earth and a journey to the afterlife.perichelydianAny reptile of the clade Perichelydia.perichromatin(biology) Surrounding the chromatin of a cell nucleuspericlitation(obsolete) The state of being in peril.pericytherionPeriapsis around Venus.periocclusionSurrounding an occlusionperiodisationAlternative form of periodization.periodizationThe process of categorizing something (e.g. history) into named periods.periopathogenAny periopathogenic pathogenperiovulation(biology) The period of time around which ovulation occurs.perioxidationMisspelling of peroxidation.periposeidionPeriapsis around Neptune.perlustrationthe action or fact of perlustratingpermutahedronAlternative form of permutohedron.permutohedron(mathematics) A polytope with n-1 dimensions that is embedded in an n-dimensional space, its vertices formed by permuting the coordinates of the vector (1, 2, 3, ..., n).peroxidorexinMisspelling of peroxiredoxin.peroxiredoxin(biochemistry) Any of a family of antioxidant enzymes that mediate signal transduction in mammalian cells.peroxyredoxinAlternative form of peroxiredoxin.perscrutation(rare) A thorough searching; a minute inquiry or scrutiny.perseveration(psychology) The tendency to continue or repeat an act or activity after the cessation of the original stimulus.personizationpersonificationpervaporation(chemistry) A technique whereby the components of a mixture of two liquids are separated by selective permeation through a semipermeable membrane, the component that passes through the membrane being removed by evaporationpervigilation(obsolete, rare) Careful watching.pessimizationThe act or process of pessimizing, or making something worse.pestificationThe action, or the result of pestifying.petiotizationA wine-making process in which the marc from which the juice has been separated as usual by pressure is mixed with a solution of sugar and water, and the mixture again fermented, the second steeping containing, like the first, notable quantities of potassium bitartrate, tannic acid, etc.petrification(figurative) obduracy; callousness.petrolizationThe treatment of water with kerosene in order to exterminate mosquitoes.phagocytationThe act, or the result of phagocytizingphalansterianOne who favours the system of phalansteries proposed by Charles Fourier.phanerogamianphanerogamicphantasmalian(obsolete, rare) Synonym of phantasmal.pharmorubicinSynonym of epirubicin.phaseolotoxin(toxicology) A toxin, produced by halo blight pathogen, that causes systemic chlorosis.pheneticillin(pharmacology) A certain penicillin antibiotic.phenolizationTreatment with phenol.phenprocoumonA long-acting oral anticoagulant drug, derived from coumarin, used for the prophylaxis and treatment of thromboembolic disorders.phenylahistinA cytotoxic metabolite produced by the fungus Aspergillus ustus.phenylurethanC₆H₅NHCOOC₂H₅, an aromatic crystalline ester usually made by adding ethyl alcohol to phenyl isocyanate.phenyracillin(pharmacology) A penicillin antibiotic.pholorotanninMisspelling of phlorotannin.phonemisationNon-Oxford British English standard spelling of phonemization.phonemizationThe process of making or becoming phonemic.phonetizationThe art or process of representing sounds by phonetic signs.phoniatricianA practitioner of phoniatrics.phosphodomain(biochemistry) A domain of a phosphoproteinphosphoglucan(organic chemistry) Any glucan that is associated with a phospholipidphosphoglycan(organic chemistry) Any glycan that is associated with a phospholipidphospholamban(biochemistry) A protein that regulates the Ca2+ pump in cardiac muscle and skeletal muscle cells.phospholambinMisspelling of phospholamban.phosphomannan(biochemistry) A phosphosugar derived from mannanphosphoration(chemistry) Reaction with, or conversion into, a phosphoric acidphosphoscreenA phosphor screenphotoablation(surgery) The selective destruction of tissue by light, normally by means of a laserphotoaddition(chemistry) Any bimolecular addition reaction that takes place under the influence of lightphotoallergenA substance that generates an allergic response in the presence of lightphotoaquation(chemistry, physics) photochemical aquationphotoelectron(physics) An electron ejected from the surface of a material by the photoelectric effect.photoemission(physics) the ejection of electrons from the surface of a solid by incident electromagnetic radiationphotoemulsion(photography) photographic emulsionphotohydrogen(biochemistry) hydrogen produced (along with oxygen) by the photolytic decomposition of water in certain anaerobic algae etcphotojunctionA nuclear battery in which a phosphor is irradiated by a radioactive material; a silicon junction converts the emitted light into electricity.photoligation(chemistry) Ligation triggered by light.photolocation(ichthyology) The ability to use light to locate objects in the environment.photomarathonA photography competition in which participants must take a series of photographs of predetermined subjects in a limited time period.photoporation(cytology) The process of using light to create pores in a cell membranephotoreaction(chemistry) a photochemical reactionphotostimulon(biochemistry, genetics) photochemical stimulonphthalocyaninAlternative form of phthalocyanine.phthirapteran(entomology) Any member of the order Phthiraptera of lice.phycoerythrin(biochemistry) A red, light-harvesting protein found in cyanobacteria, red algae and cryptomonads.phycourobilin(biochemistry) A tetrapyrrole orange molecule involved in photosynthesis in cyanobacteria and red algae.phyllanthocin(organic chemistry) The aglycon of the antileukemic glycoside phyllanthosidephyllophyllin(organic chemistry) A monocarboxylic acid derivative of chlorophyll.phylloxanthin(obsolete, organic chemistry) xanthophyll.physisorption(physical chemistry) adsorption in which the forces involved are intermolecular rather than chemicalphytochelatin(biochemistry) A metal-binding polypeptide that is formed in some plants exposed to high levels of heavy metalsphytocystatinAny cystatin found in plants.phytoerythrin(biochemistry) A red pigment obtained from certain lichenphytoestrogen(biochemistry) A substance found in certain plants (such as genistein) which can produce effects like that of the hormone estrogen when ingested into the body.phytoferritin(biochemistry) An iron-protein complex found in plant chloroplasts; it is the plant version of ferritinphytoglycogenA highly biocompatible polysaccharide extracted from plants, especially millet.phytopathogen(biology) Any organism that is pathogenic to plantsphytoplanktonPlankton, especially those small in size, that obtain energy by photosynthesis.phytosorptionabsorption by plantspicoinjectionThe injection of a reagent into a microfluidic droppicoxystrobinA particular strobilurin fungicide.picturisationAlternative form of picturization.picturization(India) The setting or coordination of soundtrack music of a motion picture to events or choreography onscreenpidginization(linguistics) The development of a pidgin language.pillarisationAlternative form of pillarization.pillarizationThe act or process of pillarizing.pillorizationSynonym of pillorying.pinguefactionA making of, or turning into, fat.pingyangmycinAn antitumor glycopeptide antibiotic belonging to the bleomycin family, produced by Streptomyces verticillus var. pingyangensis.pinkificationThe act or process of being made pink or being saturated with pink.pinoquercetin(organic chemistry) The flavone derivative 6-methylquercetin that is a plant metabolitepinyinisationAlternative letter-case form of Pinyinisation.pinyinizationAlternative letter-case form of Pinyinization.pirbenicillin(pharmacology) A penicillin antibiotic.pivampicillin(pharmacology) A pivaloyloxymethyl ester of ampicillin.planarizationThe act or process of planarizing.planification(nonstandard, non-native speakers' English) The process of planning.planktocyclinA cyclooctapeptide protease inhibitor produced by the cyanobacterium Planktothrix rubescensplanosporicinA peptide lantibiotic produced by the actinomycete Planomonospora alba.plantazolicinA natural antibiotic produced by the soil bacterium Bacillus amyloliquefaciens and active against anthrax.plasmiduction(biology) The cytoduction of plasmids.plasmoredoxin(biochemistry) A redox protein associated with malarial parasitesplatensimycin(organic chemistry, pharmacology) A natural antibiotic occurring in strains of Streptomyces platensis.plateosaurianAny sauropodomorph dinosaur of the clade Plateosauriaplatinisation(chiefly UK) Alternative form of platinization.platinizationthe process of coating (something) with platinum.platyrhacidanAny millipede of the family PlatyrhacidaeplebificationMaking plebeian; vulgarizing.pleosporaleanAny fungus of the order PleosporalespleuromutilinAny of a class of antibacterial drugs that inhibit protein synthesis in bacteria by binding to a peptidyltransferase component within a ribosome.pleurotolysin(biochemistry) A particular cytolysinplosivisationAlternative spelling of plosivization.plosivization(phonetics) The process of making or becoming plosive.pluginization(computing) The act or process of designing a system so that it can be extended with plug-ins.pluperfectionThe quality or state of being more than perfect or complete.pluralisationAlternative spelling of pluralization.pluralizationThe act of making plural.pneumoprotein(biochemistry) Any protein typically found in the fluid of the lungspodocarpaceanAny conifer of the family PodocarpaceaepodsolizationAlternative form of podzolization.podzolisationAlternative form of podzolization.podzolizationThe process of podzolizing.poeticizationThe act or process of making poetic.pogromizationThe carrying out of a pogrom.polderizationThe process of forming polders.pollicisationAlternative form of pollicization.pollicitationA voluntary engagement, or a paper containing it; a promise.pollicizationA plastic surgery technique in which a thumb is created from an existing finger, typically by migrating the index finger to the position of the thumb.polyaddiction(medicine) The condition of having more than one addiction.polyadelphianArchaic form of polyadelphous.polyamidation(chemistry) Any reaction that yields a polyamidepolyamination(organic chemistry) The introduction of many amine groups into a moleculepolycotyledon(botany) A plant that has many, or more than two, cotyledons in the seed.polydnavirionThe virion of a polydnaviruspolyfructosan(biochemistry) A form of fructanpolyhistorianSynonym of polyhistor.polyinstanton(physics) That involves multiple instantonspolyketomycinA tetracyclic quinone glycoside produced by StreptomycespolyneopteranAny insect of the subdivision Polyneoptera.polyovulationThe production of multiple ova in each ovulationpolyperythrin(obsolete, biochemistry) hematoporphyrinpolypomedusanA cnidarian of the former order PolypomedusaepolysectarianComposed of many sects.polysulfation(chemistry) reaction with many sulfate groupspolyubiquitin(biochemistry) A chain of several ubiquitin molecules attached to a protein.pontificationThe act of pontificatingpornificationConversion to the style or level of pornography.porphyrinogen(biochemistry) A reduced form of porphyrin that is an intermediate in the biosynthesis of hemeportalization(Internet) Conversion into a portal.postadmissionOccurring after admissionpostcessationAfter something has ceased.postcognition(parapsychology) retrocognitionpostcollisionAfter collision.postcollusionAfter collusion.postcommunionThe concluding portion of the communion service.postcondition(programming) A condition that must be met immediately after execution of some piece of code.postdefectionAfter defection.postdigestionAfter digestion.postdisseisinSynonym of redisseizin.posterisationAlternative form of posterization.posterizationThe act or process of posterizing.posteromedianBoth central and posteriorpostexcretionFollowing excretionpostexecutionAfter execution (the government-sanctioned killing of a criminal).postexpansionAfter expansion.postextensionFollowing extensionpostformationAfter formation (of a business, an anatomical structure, etc.).posthydrationFollowing hydrationpostimmersionFollowing immersion in water (with the danger of drowning)postinclusionAfter inclusion.postinductionFollowing inductionpostinfection(medicine) Occurring after an infectionpostingestionAfter ingestion.postinjection(medicine) After an injection is administeredpostinsertionAfter insertion.postisolationOccurring after a period of isolation.postlapsarianPertaining to anything which follows a lapse or failure.postmigrationAfter migration.postocclusionFollowing formation of an occlusionpostoperationAfter an operation.postovulationAlternative form of post-ovulation.postperfusion(medicine) After perfusion.postpromotionAfter a promotion.postradiationAfter radiation.postrecessionOccurring after a recession.postreduction(medicine) After reduction (realignment of a fracture, etc.).postrejectionAfter rejection.postremissionAfter remission of a disease.postresectionAfter resection.postsectarianAfter or beyond sects or sectarianism, especially as a reaction to sectarianism.postselectionFollowing selection.potentisationAlternative form of potentization.potentizationThe vigorous shaking of a homeopathic medicine, supposed to make it more effective.powderizationThe process, or the result of powderizingpradofloxacin(pharmacology) A particular veterinary antibiotic of the fluoroquinolone class.praeflorationAlternative form of prefloration.praefoliationArchaic form of prefoliation.preabsorbtionMisspelling of preabsorption.preabsorptionabsorption prior to some other processpreaccusationprevious or prior accusationpreactivationactivation in advancepreadaptation(biology) An adaptation that evolved in an ancestral population, in which it served a different functionpreadmonitionPrevious warning or admonition; forewarning.preadsorptionPrior adsorptionpreallocation(computing) allocation in advancepreambulation(obsolete) A walking or going before; precedence.preamputation(surgery) Prior to amputationpreaspiration(phonetics) A period of voiceless breathing that precedes some consonants in some languages—a sort of mirror-image of aspiration.preassumptionassumption in advanceprebilaterianprior to the evolution of the bilateriansprecarcinogenAny substance that can be converted into a carcinogenprecarisationBritish standard spelling of precarization.precarization(sociology) The process by which the number of people who live in precarity increases.precastrationBefore a castration.precatenation(genetics) catenation prior to replicationprecerebellin(biochemistry) A precursor of cerebellin.precipitation(meteorology) The amount of water precipitated in any form.precogitationPrevious cogitation.precollectionA fashion collection made available shortly before the usual season for such garments.precombustionAlternative spelling of pre-combustion.precompactionThe process of precompacting a material.precompletionBefore completion.preconceptionAn opinion formed before obtaining adequate evidence, especially as the result of bias or prejudice.preconcertionThe act of preconcerting; preconcert.preconisationAlternative form of preconization.preconizationA publishing by proclamation; a public proclamation.preconventionBefore a convention (meeting or gathering).preconversionPrior to conversionpreconvictionPrior to conviction.precoronationBefore a coronation.precorrectionA correction applied in advanceprededicationA dedication made previously or beforehand.predefinitionThe act or process of defining something in advance.predepositionThe act of depositing something in advance.predepressionAlternative spelling of pre-depression.predetonationWhen a nuclear bomb fails to produce full yield, due to the chain reaction starting prematurely, before the system is at optimum criticality.predilatation(surgery) dilatation (typically with a balloon) prior to some other procedureprediscussionBefore a discussion.predisruptionBefore disruption.predistortionDistortion prior to some other process.predominationThe act or state of predominating; ascendency; predominance.preexcitationearly excitation; applied to a condition where the ventricles of the heart become depolarized too early, which leads to their partial premature contractionpreextractionextraction prior to some other operationprefigurationA vague representation or suggestion of something before it has happened or been accomplished.prefiltrationBefore filtration.pregenerationGeneration in advance.pregraduationPrior to graduation from an academic course.preincubationincubation prior to some other treatment or processpreinfarctionThat occurs prior to a myocardial infarctionpreinitiationinitiation in advance or too soonpreinspectionBefore inspection.preintimationPrevious intimation; a suggestion beforehand.preintubationBefore intubation.preionizationionization in advance of another processpreirrigationBefore irrigation.prejudicationjudgment without due examination of facts and evidenceprekallikreinA serine protease that complexes with high-molecular-weight kininogen; the precursor of plasma kallikrein.prelaminationlamination in advancepreliberationPrior to liberation.prelitigationPrior to litigation.premafloxacin(pharmacology) A quinolone antibiotic.prematurationPrior to maturationpremedicationPre medication.premeditationThe act of planning or plotting something in advance, especially a crime.premotoneuronA structure that develops into a motor neuronprenominationbefore a nominationprenucleation(cytology) Occurring before nucleation; occurring before the formation of a nucleus.prenunciation(obsolete) The act of announcing or proclaiming beforehand.prenylprotein(biochemistry) Any prenylated proteinpreoccupationThe state of being preoccupied or an idea that preoccupies the mind; enthrallment.preordinationThe state or process of things being preordained.preoxiredoxinMisspelling of peroxiredoxin.preperceptionA preliminary perceptionpreperifusionperifusion in advance of some other operationprepersuasionThe process of preparing a person to be amenable to persuasion.prepopulationThe act of prepopulating.prepossession(uncountable) A preoccupation; having possession beforehand.prepostmodernHaving the characteristics of a movement or style (of art, architecture, literature, science, or philosophy) that came before postmodernism; modern.preproalbumin(biochemistry) A precursor of an albumin that has an extension of amino acids at the N-terminuspreproductionAll the preliminary arrangements that are made before the start of a project, especially before the filming of a movie.preproghrelinA precursor of proghrelinpreproinsulin(biochemistry) A biologically inactive precursor to the endocrine hormone insulin.prepromelanin(biochemistry) A precursor of melanin.preproproteinThe precursor of a proproteinpreprorelaxin(biochemistry) A precursor of prorelaxin.preregulationBefore the introduction of a regulation.prerenovationOccurring or existing before a renovationpreretractionPrior to retractionprerevolutionOccurring before a period of revolution.presaturationHappening before saturationpreseparationprior separationpresimulationsimulation prior to some other processpresonicationsonication prior to some other processprestarvationPrior to starvation.prestigiation(obsolete) legerdemain; prestidigitation (deception, or juggling)prestraighten(transitive) To straighten in advance.prestrengthen(transitive) To strengthen in advance.pretabulationBefore tabulation.pretelevisionBefore the introduction of television.pretermissionOmission; failure to do something.pretervection(obsolete, nonce word) The act of carrying past or beyond.pretransitionBefore a transition; pretransitional.prevalidationThe act or process of prevalidating.prevaricationEvasion of the truth.prevegetationBefore the appearance of vegetation.prevenception(medicine, obsolete) contraception.previsitationPrior to visitation.principiation(archaic) analysis into primary or elemental partsprisonizationThe process of assimilation to the customs, social norms, etc. of a prison.pristinamycin(pharmacology) An antibiotic used primarily in the treatment of staphylococcal infections, and to a lesser extent streptococcal infections.privateersman(nautical) The captain or member of the crew of a privateer.privateersmenplural of privateersmanprivatisationNon-Oxford British English standard spelling of privatization.privatizationThe transfer of a company or organization from government to private ownership and control.procalcitonin(biochemistry) A peptide precursor to the hormone calcitoninprocarcinogenAny substance that is transformed into a carcinogen by metabolism.proconventionIn favour of a convention.proenkephalin(biochemistry) A precursor of leuenkephalin and metenkephalin.progenerationThe act of begetting; propagation.proglumetacin(pharmacology) A nonsteroidal anti-inflammatory drug.proirrigationIn favour of irrigation.proliferation(uncountable) The process by which an organism produces others of its kind; breeding, propagation, procreation, reproduction.prolification(dated) The generation of young.proneurotoxinAny material that is metabolised to become a neurotoxinpronunciation(countable) The formal or informal way in which a word is made to sound when spoken.propagulationasexual reproduction via propagulespropolisationAlternative form of propolization.propolizationThe process of propolizing.proprietarian(China) A person who owns property (a proprietor) or believes in proprietarianism, that is, that property is an absolute right.propylparabenThe n-propyl ester of p-hydroxybenzoic acid, used as a preservative.proregressionA combination of progression and regression, cancelling each other out and leading to stasis.prosificationThe process of prosifying.prostaglandin(biochemistry) Any of a group of naturally occurring lipids derived from the C₂₀ acid prostanoic acid; they have a number of physiological functions and may be considered to be hormones.prosternation(obsolete) dejection; depressionprosthetician(medicine) one who fits prosthesesprotacadherinAlternative form of protocadherin.protachykinin(biochemistry) A peptide isolated from pheochromocytoma tissue.protamination(biology) The formation of protamines during spermatogenesisproteoheparan(biochemistry) A complex of protein and heparan (always as a sulphate)protoanemonin(biochemistry) A toxin found in all plants of the buttercup family (Ranunculaceae), produced by an enzymatic process from the glucoside ranunculin.protocadherin(biology) Any of several polypeptides that are fragments of cadherinprotocephalonThe basic embryonic head of an anthropod.protocerebronMisspelling of protocerebrum.protocollagenA form of collagen prior to its hydroxylationprotonization(chemistry) Synonym of protonation.protuberation(rare) protuberanceprudification(rare) The increase of excessive propriety on matters related to sex.prulifloxacin(pharmacology) A synthetic chemotherapeutic antibiotic of the fluoroquinolone class.pseudisodomon(architecture) An early style of masonry used by the Greeks, in which the courses have differing height, length, or thickness of stones, though the stones in any one course are alike.pseudoabelianAlmost abelian.pseudoalterin(biochemistry) A metalloprotease isolated from deep-sea bacteria of a Pseudoalteromonas species.pseudofermion(physics) A form of fermion that has integer spinpseudofictionWriting that resembles fiction but lacks key attributes of fiction; for example, an autobiographical novelpseudohalogen(chemistry) A binary inorganic compound with a structure similar to that of the interhalogens but containing at least one non-halogen radical such as cyanidepseudohexagonA shape that is approximately a hexagonpseudoindican(dated) iridoidpseudolesbianAlternative spelling of pseudo-lesbian.pseudolysogenA phage that undergoes pseudolysogenypseudoproteinA man-made polypeptide that has some properties of a proteinpseudosuchian(zoology) Belonging to the Pseudosuchia.pseudosylvian(anatomy) Describing an extension of the lateral sulcus on each hemisphere of the brainpseudotrypsin(biochemistry) A proteoform of trypsinpseudovitaminA vitamin-like analogue that is biologically inactive in humans.psilostachyin(organic chemistry) Any of a group of bioactive isolates of Ambrosia psilostachya.psychosurgeonOne who carries out psychosurgery.ptiloerection(ornithology) Fluffing up of feathers or down so that birds can control heat.ptychodacteanAny sea anemone of the suborder PtychodacteaepublicizationThe act of publicizingpublificationMaking public, for or to be used by the people or community.puebloizationThe process or resulting of puebloizing; conversion into a pueblo.puerilization(rare) The act or process of acquiring puerile characteristics.pulpificationThe process of pulpifying.pulverisationAlternative spelling of pulverization.pulverizationThe act of pulverizing.punicacortein(organic chemistry) A particular ellagitannin.purpurogallinA red crystalline compound, the aglycon of several glycosides from nutgalls and oak barks.pussification(slang, vulgar) The act or process of pussifying.pussyfication(vulgar, slang, derogatory) The process of making or becoming weaker, gentler, or less masculine.putidaredoxin(biochemistry) An adrenodoxin produced by Pseudomonas putidaputrification(archaic) putrefactionpuwainaphycinAmy of a group of cytotoxic lipopeptides present in some cyanobacteriapyrocollodionA smokeless powder, a variant of nitrocellulose.pyroxanthogen(obsolete, organic chemistry) The component of wood tar from which pyroxanthin is obtained