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pachyrhinosaurinAny of the dinosaurs of the tribe †Pachyrhinosaurini, a clade of centrosaurine ceratopsids.palaeoencephalonAlternative form of paleoencephalon.palaeosubduction(geology) A subduction that occurred in the geologic pastpalaeovegetationAlternative form of paleovegetation.palagonitization(geology) Transformation of lava to palagonite by weathering.paleocirculationAncient oceanic and atmospheric circulation patterns.paleolibertarianA supporter of paleolibertarianism.paleomagneticianA specialist in the field of paleomagnetismpansexualizationProcess of making pansexual.paraclausithyronA motif in classical love poetry, the lament of a shut-out lover.paracoccidioidinAn antigen prepared from the pathogenic fungus Paracoccidioides brasiliensisparagraphizationThe act or result of paragraphizing; arrangement into paragraphs.parainflammation(pathology) inflammation as a response to an external stressparaklausithyronAlternative spelling of paraclausithyron.parallelopipedonA parallelopiped.paramaterisationMisspelling of parameterisation.parameterisation(British spelling) Alternative spelling of parametrisation.parameterizationThe representation of a curve or surface in terms of a parametric equation.parasubstitution(organic chemistry) Any substitution reaction that introduces an atom or group into the para- positionparaveterinarianAn assistant veterinarianparchmentizationThe process of parchmentizing.parenthesizationThe action or result of parenthesizing.parochializationThe act or process of parochializing.pathoprogression(pathology) The progression of a diseasepatriarchisationAlternative spelling of patriarchization.patriarchizationThe act or process of patriarchizing.pattinsonizationThe process of pattinsonizing.pejorativization(linguistics) The process by which a term gains a more negative connotation over time.pentaacetylation(organic chemistry) Modification by the addition of five acetyl groupspentacyclization(organic chemistry) Formation of a pentacyclic compound.pentecontalitronA large gold coin of ancient Sicily worth fifty litrasperamelemorphianAny marsupial of the order Peramelemorphia; a bilby or a bandicoot.perennialization(agriculture) The conversion of a plant from an annual to a perennialperfectivization(grammar) The process of forming a perfective verb from the imperfective verbal stem.perfluorodecalin(organic chemistry) A perfluorocarbon, a derivative of decalin in which all of the hydrogen atoms are replaced by fluorine atoms.pericondensation(organic chemistry) The condensation of neighbouring aromatic systems (often in the same molecule) typically to form a fused aromatic systemperigastrulation(physiology) Occurring around the time of gastrulationperiimplantationAround the time of implantationperimenstruationperimenstrualperimetropolitanSurrounding a metropolisperiviscerokinin(biochemistry) Any of a family of neuropeptides present in some insectspermeabilisationAlternative spelling of permeabilization.permeabilizationthe act, process or result of making something, such as a membrane or cell wall, permeable - often through the use of surfactantsphagostimulationstimulation of the urge to feedphalloplasticianA surgeon who performs phalloplasty.pharmacosedationsedation by means of a pharmaceutical drugpharyngalizationAlternative form of pharyngealization.philosophicationThe process of bringing something into the realm of philosophy.philosophizationProcess or action of philosophizing.phlebotomization(medicine) The process of phlebotomizing (performing phlebotomy).phlogopitization(mineralogy) Conversion into phlogopite.phlorizinizationThe process of phlorizinizing.phosphinothricinThe herbicide (RS)-2-amino-4-[hydroxy(methyl)phosphinoyl]butyric acid.phosphortungstenAn alloy, especially a specialist form of steel, that contains phosphorus and tungstenphotoacclimation(biology) acclimation to a particular light environmentphotoassociation(physics) The association of two atoms, under the influence of laser light, to form an excited diatomic molecule.photobiliprotein(biochemistry) Synonym of biliprotein.photocoagulation(medicine) A surgical procedure in which a tumour, or diseased retinal tissue, is destroyed by using a laser.photocompositionSynonym of phototypesetting.photoconjugationphotochemical conjugationphotoconsumptionThe consumption of a chemical species (typically molecular oxygen) under the influence of lightphotocyclization(chemistry, physics) Any intramolecular photochemical process leading to a ring system by formation of one new single bond, either by a concerted process (e.g., electrocyclization) or by multi-step processes such as the Norrish-Yang reaction.photodegradationAny reduction or degradation in a useful property of a material because of a chemical change as a result of absorption of light.photodestructionphotobleachingphotodissolutionphotochemical dissolutionphotoduplicationphotocopyingphotoelicitationThe elicitation of a response to the display of a photographic imagephotoelimination(chemistry, physics) photochemical eliminationphotoenolization(chemistry) A form of phototautomerization leading to the production of enolsphotoevaporation(astronomy) The removal of the atmosphere of a planet or removal of a protoplanetary disk by high-energy photons from its sun or a nearby hot starphotofabricationA photographic method of manufacturing integrated circuits in which a pattern is placed over a semiconductor in an etching solution and exposed to lightphotoirradiationirradiation with lightphotooxygenation(chemistry) Any oxygenation reaction that takes place in the presence of light.photorespiration(biology) Light-dependent release of carbon dioxide and uptake of oxygen in photosynthetic organisms as an unavoidable side reaction of photosynthesis.photostimulation(biology, physics) The activation of a biological organ or organism by means of lightphycobiliproteinAny of a class of water-soluble proteins, present in cyanobacteria and certain algae, that capture light energy which is then passed on to chlorophylls during photosynthesis; the most important constituents of the phycobilisomes.phycobiloproteinMisspelling of phycobiliprotein.physioabsorptionAlternative form of physisorption.physioregulation(biochemistry) physiochemical regulationphytoassociation(botany) association with plantsphytochromobilinA bilin chromophore found in phytochromephytodegradation(biochemistry) The process by which substances taken by a plant from its environment are broken downphytohemagglutinMisspelling of phytohemagglutinin.phytopreparationA preparation made from plant materialphytoremediation(biochemistry) Bioremediation through the use of plants.phytostimulation(biology) A form of phytoremediation in which microbial activity near the roots is increasedpicropodophyllin(medicine) A particular chemokine that induces apoptosis in some tumour cellspictorializationThe process or result of pictorializing.piezotranslationThe conversion of pressure into movement by a piezotranslator.plagiogrammaceanAny diatom of the family PlagiogrammaceaepoliticalizationThe process or instance of making something political.polychronizationThe process of becoming polychronic.polycondensation(chemistry) Any condensation reaction, of a monomer having two functional groups, which leads to the formation of a polymer (a polycondensate).polydodecahedronconvex regular 4-polytype (four-dimensional analogue of a Platonic solid) with Schläfli symbol {5,3,3}polyethoxylation(organic chemistry) Reaction with multiple instances of ethylene oxidepolyfluoroolefin(chemistry) Any of several polymers made from the polymerization of fluorinated olefinspolygalacturonan(biochemistry) A polymeric form of galacturonanpolyhalogenation(chemistry) The process of making something polyhalogenated.polyploidisationAlternative form of polyploidization.polyploidization(genetics) hybridization that leads to polyploidypolytechnizationThe practice, typically in communist states, of prioritizing technical and industrial aspects of educationpolyunsaturation(chemistry) The state of being polyunsaturated, or the degree to which something is polyunsaturated.porcelainizationThe act or process of porcelainizing.postacceleration(physics) acceleration of an electron following deflection by a magnetic fieldpostadjudicationAfter adjudication.postchlorinationThe addition of chlorine to the treated water right before it is distributed.postcircumcisionFollowing circumcision.postcivilizationAfter civilization.postconstructionOccurring after construction.postconsultationAfter consultation.postcoordinationcoordination following some other operationpostdistributionAfter a distribution.postemancipation(US) After the Emancipation Proclamation.postembolisationAlternative form of postembolization.postembolizationAfter embolization.postenvenomationAfter envenomation.posteriorisationAlternative form of posteriorization.posteriorization(biology) The acquisition of posterior values, especially the formation of the forebrain, midbrain, hindbrain and spinal cord from the anterior neural platepostfermentationFollowing fermentationpostfinalizationAfter the finalization of an adoption, at the point of legal transfer of parental rights and withdrawal of supervision.postgastrulationAfter gastrulationpostilluminationFollowing illuminationpostimmunisationAlternative form of postimmunization.postimmunizationAfter immunization.postimplantationFollowing implantation.postinfiltrationFollowing infiltrationpostinseminationFollowing inseminationpostinterventionAfter intervention.postintoxicationAfter intoxication.postintroductionAfter the introduction of something.postmanipulationFollowing manipulationpostmodification(grammar) modification by a postmodifierpostpresentationAfter presentationpostratificationFollowing ratification.postreactivationFollowing reactivationpostresurrectionAfter resurrection.posttransductionAfter transduction.posttransfectionFollowing transfectionpostunionizationAfter unionization.potentializationThe process of potentializing.practicalizationThe process of practicalizing.preaccreditationBefore accreditation.preacidificationA prior acidification.preamplificationThe use of a preamplifier.preauthorisationAlternative form of preauthorization.preauthorizationPrior to authorization.prebiotinylationPrior to biotinylationprecardioversionBefore cardioversion.precertificationCertification in advance.preconcentration(chemistry) The concentration of a trace material prior to an analysispreconfigurationconfiguration in advancepreconsiderationPrior consideration; the act of considering something in advance.preconsolidationPrior to consolidationprecontemplation(psychology) Prior to contemplation (concerning one's behaviour)predecompositiondecomposition prior to some other processpredeterminationThe act of determining beforehand.predisseminationprior disseminationpredomesticationBefore domestication.preequilibrationPrior to equilibrationprefertilizationPrior to fertilizationprefossilizationprior fossilizationprefractionationfractionation prior to some other processpreglobalizationBefore globalization.prehybridisationAlternative spelling of prehybridization.prehybridizationhybridization prior to some other processpreincorporation(business) Prior to incorporation.preinvestigationPrior to investigationprelumirhodopsinbathorhodopsinprematriculationBefore matriculation.premechanizationAlternative form of pre-mechanization.premodernizationBefore modernizationprenylnaringeninAny of a class of prenylflavonoids that are potent phytoestrogens found in hops.preparticipationPrior to participation.preprocalcitonin(biochemistry) A precursor in the biosynthesis of procalcitonin, as well as calcitonin and katacalcin further downstream.preproenkaphalinMisspelling of preproenkephalin.preproenkephalinA precursor of proenkephalinpreprohypocretin(biochemistry) A precursor of hypocretin.prepronociceptin(biochemistry) A protein that is the precursor of nociceptin and nocistatinpreprotachykinin(biochemistry) Any of a family of peptide precursors of the tachykinin neurotransmittersprequalificationqualification in advanceprerandomisationprior randomisationpresensitizationBefore sensitizationpresignificationA prior signification; the act of signifying or showing beforehand.prespecificationspecification in advanceprestabilizationPrior to stabilizationprestidigitationA performance of or skill in performing magic or conjuring tricks with the hands.pretergeneration(rare) Preternatural generation; monstrous birthpretranscriptionPrior to transcription.pretranslocation(genetics) Prior to translocationprevirializationPrior to virializationprevisualization(film) Any technique that attempts to visualize a scene before the filming begins.proanthocyanidinAn antioxidant flavonoid with possible health benefits, found in many plant sources, including apples, bilberry, grapeseed, pine bark, and black chokeberry.probainognathianA members of the Probainognathia clade of therapsid animals.problematisationBritish standard spelling of problematization.problematizationThe process of problematizing, or something problematized.procalcificationThat promotes calcification.procrasturbation(slang, humorous, somewhat vulgar) The act of putting off something important or wasting time by engaging in a leisure activity, particularly masturbation.projectivisationAlternative form of projectivization.projectivization(mathematics, algebraic geometry, birational geometry) A process (more formally, a mapping) that, given a vector space, specifies an associated projective space; (loosely) the projective space so specified.promitochondrionA primitive mitochondrion that lacks some inner membranespropagandizationThe spreading of propaganda.proterochampsianAny extinct reptile of the clade †ProterochampsiaprotoaspidistrinA particular steroid glycoside.protoceratopsianSynonym of protoceratopsid.protocooperation(biology) The situation where two species interact with each other beneficially, without having a specific need to do so.protooncoprotein(biochemistry) Any protein that is converted to an oncoproteinprotozooplankton(biology) protozoan planktonprozostrodontianAny cynodont of the clade Prozostrodontiapseudoadaptation(biology) The apparent adaptation of an organism to a changed environment that is however accompanied by excessive stress that causes later pathological change.pseudobaptigeninAn isoflavone found in Trifolium pratense (red clover).pseudocopulation(biology) Any of various processes, amongst diverse animals, in which male gametes are passed from one individual to another without sexual union.pseudodepression(medicine) The signs and symptoms of depression from a non-depressive, often organic aetiology.pseudoepipleuronA false epipleuronpseudoextinctionphyletic extinction; the situation where all members of a species are extinct, but members of a daughter species remain alivepseudogenisationAlternative form of pseudogenization.pseudogenization(genetics) The conversion of a gene into a pseudogene.pseudoherniationThe formation of a pseudohernia.pseudoinfarction(cardiology) Any condition which imitates the characteristics of an acute myocardial infarction, especially in its pattern on an electrocardiogram.pseudoliberationFalse liberation; The process or instance of appearing to be liberation while not actually liberating.pseudonymisationAlternative spelling of pseudonymization.pseudonymization(computing, law) The replacement of all data (in a database etc) that identifies a person with an artificial identifier or pseudonym.pseudophyllideanRelating to flatworms of the order Pseudophyllideapseudopopulation(statistics) A subset of a population used in simulationspseudoprofessionA job that is not considered a true profession, but has many characteristics of a professionpseudorevolutionA political event resembling, but not actually, a revolution.pseudospeciationThe formation of self-contained groups (typically of humans) that have different language, customs or other social grouping.pseudouridimycin(medicine) An antibiotic active against bacterial RNA polymerasepsychiatrisationNon-Oxford British English standard spelling of psychiatrization.psychiatrizationThe act or process of psychiatrizing.psychoactivationactivation by a psychoactive substancepsychologizationPsychological analysis or interpretation.psychosomaticianA psychosomaticist: a specialist in psychosomatic disorders.psychotechnicianA practitioner of psychotechnology.pumpkinificationThe act of turning into a pumpkin; usually in jocular opposition to deification.pyramidalizationThe deformation of a trigonal planar molecule into a tetrahedral arrangement.pyridylamination(organic chemistry) Reaction with a pyridylamino grouppyrogasificationCombined pyrolysis and gasification.