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All 421 Matching Words

pacidamycin(medicine) Any of a group of uridyl peptide antibioticspaddywaggonAlternative form of paddy wagon.paenibactin(organic chemistry) A catecholate siderophore produced by PaenibacilluspalaeobasinAlternative form of paleobasin.palaeoplainAlternative form of paleoplain.palaestrianAlternative form of palestrian.paleocanyonAn ancient canyon.paleoeolianAlternative spelling of palaeoaeolian.paleoindianAlternative form of Paleo-Indian.paleolagoonAn ancient lagoonpaleomarginThe edge of a paleolake or paleolagoonpalladation(organic chemistry) Any reaction in which a palladium atom is bound to an organic compound.palmdelphin(biochemistry) An isoform of a paralemminpalmitolein(organic chemistry) The triglyceride of palmitoleic acidpalmostatinAny of a group of inhibitors of acyl protein thioesterase and thus of depalmitoylationpalpitationAn abnormal beating of the heart that may be perceived by the patient, a result of excitement, exertion, or illness.palynotaxonAny taxon identified by means of spores, pollen etc.panagiarion(Christianity) A paten on which the loaf is placed, used in the 'elevation of the Panagia'.panallergenAny of a class of ubiquitous allergenic substances.panamericanOf or pertaining to the Americas in their entirety.panchrestonAn explanation that is used in so many different cases that it becomes almost meaningless.pandanalean(botany) Belonging to the plant order Pandanales.pandemonianRelating to, resembling, or characteristic of, a pandemonium.panegyricon(Christianity) In the Greek Orthodox Church, a collection of sermons for festivals.panellation(architecture) division of a feature into separate panels.paniculoninA particular steroid glycoside.panmelodion(music, historical) A 19th-century keyboard instrument whose tone is produced by wheels rubbing on metal bars.panomphaeanAlternative spelling of panomphean.pantodontanAny extinct eutherian mammal of the suborder †PantodontapantrywomanA female pantryman.paperpersonA person who delivers newspapers.papillationThe formation of papillae.paprikahuhn(dated) The chicken paprikash, a popular Hungarian dish.papyroxylin(obsolete) Synonym of gun-paper.paracelsian(mineralogy) A natural polymorph of celsian.paraexciton(physics) An exciton whose spin is antiparallel to that of its holeparafermion(physics) The equivalent of a fermion in any of several parastatisticsparakeratinAn abnormal, pyknotic form of keratinparalexiconA parallel set of vocabulary within a language, e.g. a formal register, ritual language or secret cant, code switchingparamomycinMisspelling of paromomycin.paraovarian(anatomy) In proximity to the ovaryparapleuronAlternative form of parapleurum.paraprotein(biochemistry) A protein found in the blood only as a result of diseaseparasessionA session or meeting that runs in parallel with another, or serves as an alternative.parasuchianSynonym of phytosaur.parasylvianAcross the sylvian fissureparavermianRelating to the paravermisparaxanthin(archaic, organic chemistry) A crystalline substance closely related to xanthin, once thought to be present in small quantities in urine.parcelationAlternative form of parcellation.parentation(obsolete) Something done or said in honour of the dead; obsequies.parietopsin(biochemistry) Any of a group of opsins in the parietal eye of some lizardspariphyllinA particular steroid glycoside.parisaponinA particular steroid glycoside.paromomycin(pharmacology) A mixture of broad-spectrum aminoglycoside antibiotics related to neomycin and produced by some strains of the bacterium Streptomyces rimosus, given orally in the form of the sulfate C₂₃H₄₅N₅O₁₄·H₂SO₄ in the treatment of intestinal amebiasis.paroophoron(anatomy) A small mass of tubules near the ovary in some animals, corresponding with the paradidymis of the male.parthenogenAn organism that reproduces by parthenogenesis.parturition(medicine, obstetrics) The act or process of a mother giving birth.parvalbumin(biochemistry) A small albumin protein of the nervous system that binds calcium.passivation(chemistry) The spontaneous formation of a hard non-reactive surface film (usually an oxide or nitride) that inhibits further corrosion.patefactionThe act of opening, disclosing, or manifesting; open declaration.patrolwomanA female equivalent of a patrolmanpectenaceanMisspelling of pectinacean.pectinacean(zoology) Any of the Pectinacea, an obsolete suborder of mollusks now known as the superfamily Pectinoidea.pectinationThe state of being pectinated; that which is pectinated.pectizationThe process of pectizing.pekilocerinA particular steroid glycoside.pelagiarian(rare) A member of the controversial fish clade, Pelagiaria, including the Acanthomorpha, Percomorpha, and certain potentially related extinct fishes.penaeoideanAny prawn of the superfamily PenaeoideapendulationThe act of swinging like a pendulum, as of cargo being transported by cranepenetralianRelating to the penetralia.penetrationThe act of penetrating something.pentacation(chemistry) A cation that has five positive chargespentachoron(mathematics) A four-dimensional object analogous to a tetrahedron, constructed out of five tetrahedra.pentacrinin(organic chemistry) A red and purple pigment found in certain crinoids of the genus Pentacrinus.pentahedron(geometry) A polyhedron with five faces.pentalongin(organic chemistry, medicine) A pyranonaphthoquinone antibiotic isolated from the East African medicinal plant Pentas longiflorapentandrian(botany) Of or relating to the class Pentandria; having five stamens.pentaphyrin(organic chemistry) A heterocycle that is a pentapyrrolic form of porphyrinpentaspanin(biochemistry) A protein associated with integrinpentostatinA particular drug, isolated from Streptomyces antibioticus, used in chemotherapy.peoniflorinAlternative form of paeoniflorin.peptiglycanSynonym of peptidoglycan.peptisationAlternative spelling of peptizationpeptizationThe stabilization of a hydrophobic colloidal sol by the addition of an electrolyte that is adsorbed on the particle surfacespeptoglycanAlternative form of peptidoglycan.peragration(obsolete) The act or state of passing through any space.perathiepinA neuroleptic drug of the tricyclic family.percolationThe seepage or filtration of a liquid through a porous substance.percolozoan(biology) Any unicellular organism of the phylum Percolozoa.perduellion(law, obsolete) treasonperduration(archaic) Long endurance or lastingness.perennation(botany) The ability of an organism to survive from one germinating season to the next, especially under unfavourable conditions such as drought or winter.pererrationA rambling or wandering through various places.perfloxacin(organic chemistry) A particular quinolone antibiotic, 1-ethyl-6-fluoro-7-(4-methylpiperazin-1-yl)-4-oxo-quinoline-3-carboxylic acidperforationThe act of perforating or the state of being perforated.perfrictionA severe chillperibothron(astronomy) The point in an elliptical orbit around a black hole where the orbiting body is closest to the black hole.pericardianAlternative form of pericardial.pericentrin(biochemistry) A protein that binds to calmodulin and is expressed in the centrosome, an integral component of the pericentriolar material.perienteron(medicine, obsolete) The primitive perivisceral cavity; the space between the entoderm and the ectoderm, the forerunner of the schizocoel or enterocoel.perihermionPeriapsis around Mercury.periovarianSurrounding the ovaryperisilvianMisspelling of perisylvian.peristerion(botany) The herb vervain (Verbena officinalis).perisylvian(anatomy) Around the sylvian fissure in the cerebral cortexperitrophin(biochemistry) A protein located in the peritrophic matrix of insectsperiuranionPeriapsis around Uranus.perlocution(linguistics) The effect the terms used by a speaker can have on another speaker and their emotions and responses.permafrozenpermanently frozenpermavirgin(slang, derogatory) A person who is unlikely ever to have sex.permutationOne of the ways something exists, or the ways a set of objects can be ordered.peroxidasin(biochemistry) A protein related to peroxidaseperoxidoxin(biochemistry) Any of a family of antioxidant proteinsperoxiporinA type of aquaporin that transports hydrogen peroxide across membranesperplectionRare spelling of perplexion.perpotation(obsolete, rare) excessive drinking; boozingpersecutionThe act of persecuting, especially a specific group of people; an instance of persecution.personationThe act of personating: the playing of a role or portrayal of a characterperspectioncontemplation; scrutinypertubationMisspelling of perturbation.perturbagenA substance (typically a peptide) designed to disrupt intracellular processes, providing information about the operation of pathways and networks within a cell.pescatarianAlternative form of pescetarian.pescetarianA person who consumes no animal flesh with the exception of fish or seafood.pesoizationThe process of pesoizing.petrobactina particular photoreactive catecholate siderophore produced by the marine bacterium Marinobacter hydrocarbonoclasticuspetrocarbonCarbon that originated in petroleum hydrocarbons.phaenomenonArchaic spelling of phenomenon.phaeodarianAny of the class Phaeodarea of radiolariansphaeophytinAlternative form of pheophytin.phagomyxeanRelating to the phagomyxidsphalangidanAny arachnid of the order Phalangidaphallacidin(biochemistry) A toxic cyclic peptide obtained from the mushroom Amanita phalloidesphallisacin(biochemistry) A toxic cyclic peptide obtained from the mushroom Amanita phalloidesphallolysin(organic chemistry) A toxic hemolysin found in the death cap mushroom, Amanita phalloides.phallotoxin(biochemistry) Any of several toxic cyclic peptides obtained from the mushroom Amanita phalloidesphantastronAn electronic device that generates a series of pulsespharbitisinAlternative form of pharbitin.phellamurin(organic chemistry) A flavanonol found in Phellodendron amurense; the 8-prenyl 7-glucoside derivative of aromadendrin.pheneticianSynonym of pheneticist.phenogamianSynonym of phaenogamous.phenoseasonA phenological season.phenylation(organic chemistry) Any reaction in which phenyl groups are added to a moleculephenylfuran(organic chemistry) Any phenyl derivative of a furanpheomelaninA brown pigment produced by melanocytesphillygenin(organic chemistry) A pearly crystalline substance obtained by the decomposition of phillyrin.philologian(rare) A philologist.phlogistianA believer in the existence of phlogiston.phoneticianA person who specializes in the physiology, acoustics, and perception of speech.phonovisionAn early technique for recording a mechanical television signal onto gramophone records.phosphatian(mineralogy) Containing phosphate anions.phosphorian(mineralogy) Containing phosphorus (especially when this replaces another element).photobiotin(organic chemistry) A photoactivatable derivative of biotin used in biochemical researchphotoharden(transitive) To harden by exposure to light.photolesionA lesion formed by exposure to lightphotoproton(physics) Any proton produced in a photonuclear reactionphototropin(biochemistry) Any of a class of photoreceptor flavoproteins that mediate phototropism in higher plants.phycobillinAlternative form of phycobilin.phycocyanin(biochemistry) A pigment from the light-harvesting phycobiliprotein family, along with allophycocyanin and phycoerythrin, an accessory pigment to chlorophyll.phyllochron(botany) The time interval between the sequential appearance of leaves on a plant (typically on a cereal)phylloxeranAny of the plant-feeding insects of the family Phylloxeridae, closely related to aphids.physalaemin(biochemistry) A tachykinin peptide obtained from the Physalaemus frog.phytoalexin(medicine) any of several classes of antibiotics produced by plants in response to microorganismsphytocyanin(biochemistry) Any of a family of blue, copper-containing proteins present in many plantsphytoglucanAny glucan of plant originphytomyxeanRelating to phytomyxidsphytophaganAny organism that eats plants.phytotropin(biochemistry) Any of a class of substances that inhibits auxin transport and therefore of root growth, gravitropism and phototropism.pickwickianAlternative letter-case form of Pickwickian.picrocrocinA monoterpene glycoside precursor of safranal, responsible for the bitter taste of saffron.piezophonon(physics) A phonon produced by mechanical stresspignorationThe act of pledging or pawning.pilimictionThe passing of urine containing hair-like filaments.pimpinellin(organic chemistry) A furocoumarin found in Heracleum maximum and other plants.pinnaglobin(organic chemistry) A manganese-containing porphyrin protein found in Pinna nobilis.pinnipedianSynonym of pinniped.pinobanksinAn antioxidant bioflavonoid found in sunflower honey.pinocembrinA flavanone found in damiana, honey, fingerroot, and propolis.pinostrobin(organic chemistry) The flavone (2~{S})-5-hydroxy-7-methoxy-2-phenyl-2,3-dihydrochromen-4-one that has antioxidant, antiinflammatory and anticancer propertiespipracillinAlternative form of piperacillin.piragliatinAn enzyme inhibitor.pirarubicin(pharmacology) A particular drug used in chemotherapy.piscatorianSynonym of piscatorial.piscetarian(rare) Alternative spelling of pescetarian.pitchpersonA pitchman or pitchwoman.pixellationAlternative form of pixelation.pixillationAlternative form of pixilation.plainspokenSpeaking in a forthright manner.plainswomanThe female equivalent of a plainsman.plakoglobin(biochemistry) A catenin protein that is a component of desmosomes.plakophilin(biochemistry) Any of a family of proteins, found in the cytoskeleton, that are essential for the formation and stabilization of desmosomal cell contacts.planetarianAn inhabitant of a planetplantaricinAny of a class of bacteriocins produced by the bacterium Lactobacillus plantarum.plantswomanA female plantsman.planulationThe formation of planulae, typically by some coralsplanulozoanAny animal of the proposed clade Planulozoaplasmalogen(organic chemistry) Any of a class of phospholipids, found in cell membranes, in which one of the fatty acids is replaced by an aldehyde (connected to the glycerol with an unsaturated ether linkage)plasminogen(biochemistry) The inactive precursor to plasmin; profibrinolysinplasmolipin(biochemistry) A transmembrane plasma lipoproteinplasmologenMisspelling of plasmalogen.plastochron(botany) The time between successive leaf initiation events.platination(chemistry) Reaction with a platinate ionplayception(slang) A play that portrays actors staging a play or features an internal play; a play-within-a-play.plecopteran(zoology) Any insect in the order Plecoptera, the stoneflies.plectotoxinAny toxin present in the venom of the spider Plectreurys tristispleurocidinA piscidin present in flounders of the genus Pleuronectes.pleurodiranAny turtle of the suborder Pleurodirapleurosteon(archaic, ornithology, anatomy) The anterolateral piece which articulates the sternum of birds.plicaballinA particular plication in the molars of some Neogene mammals.pliosaurianRelating to or characteristic of pliosaurs.plipastatin(organic chemistry) A lipopeptide antibiotic produced by Bacillus subtilis.ploughwoman(UK) Alternative spelling of plowwoman.plumularian(zoology) Any plumularia.plurinationA state containing large groups of people of different nationalities.pneumocolon(medicine) A colonic diagnostic procedure during which the colon is inflated with air.pneumolysinA putative virulence factor of the gram-positive bacteria Streptococcus pneumoniae. It has a range of biological activity, including the ability to lyse and interfere with the function of cells and soluble molecules of the immune system.pneumotoxinAny pneumotoxic substance.podocalyxin(biochemistry) A sialoglycoprotein, one of the transmembrane sialomucins, thought to be the major constituent of the glycocalyx of podocytes.podophyllin(organic chemistry) A resinous powder obtained by precipitating an alcoholic tincture of the rhizome of Podophyllum by means of water acidified with hydrochloric acid.poetizationThe act or process of making something poetic.policewoman(law enforcement) A female police officer.policewomenplural of policewomanpoliovirion(virology) An individual particle (virion)) of a polioviruspollenationAlternative form of pollination.pollination(botany) The transfer of pollen from an anther to a stigma; effected by insects, birds, bats and the wind etc.pollotarianA person who consumes no animal flesh with the exception of chicken or other poultry such as turkey.pollutician(derogatory) A politician who supports policies and initiatives that result in environmental damage.polyandrian(botany) Dated form of polyandrous.polyandrionA mass grave or communal tomb.polybaramin(creationism) A grouping of organisms that belong to different holobaramins.polychaetanRelating to polychaetespolycistron(genetics) A group of mRNAs expressed from a single transcription unitpolyfectiontransfection mediated by cationic polymerspolyfructan(biochemistry) A polymeric fructanpolyglactin(surgery) Any of a range of polymeric materials derived from glycolic acid that are used as a suturepolymyarianOf or pertaining to the nematode worms that have many longitudinal rows of muscle cells.polymyodianOf or pertaining to the songbirdspolynoxylinAn antiseptic that is a polymer of urea and formaldehyde.polyphyllin(organic chemistry, medicine) Any of a class of saponins, isolated from the herb Paris polyphylla, that has anticancer activitypolypiarian(obsolete) Of or pertaining to the hydroid cnidarians of class Polypiaria.polypragmon(rare) A busybody or troublemaker or someone who looks only to their own concerns.polyprotein(biochemistry) Any protein (especially ones produced by viruses) that cleave to produce a number of polypeptides, some of which act as hormonespolysilicon(chemistry) Containing many silicon atoms, especially when linked into chains or networks.polyspaston(historical) A hoisting-tackle with many pulleys.polytrichonA European moss, great golden maidenhair or great goldilocks, Polytrichum communeponeratoxinA paralyzing neurotoxic peptide isolated from the venom of the bullet ant.pontificianOf or relating to the pontiff or pope.pornoaction(Indonesia, law) Any actions, behaviors, or forms of dress considered immoral in public due to sexual mores.pornotopianOf or relating to pornotopia.posatirelin(pharmacology) A thyrotropin-releasing hormone analogue.postabdomen(zoology) The part of a crustacean behind the cephalothorax.postauctionAfter an auction.postcaptainAlternative form of post-captain.postdictionThe construction of past conditions by relying on the presentpostexilianAfter an exile, especially the Biblical exile of the Jews.postflexion(zoology) After the flexion stage of larval development.postmonsoonAfter a monsoonpostsessionAfter (the initiation of) a sessionposttension(construction) To pour concrete first and then stretch the reinforcing strands within it by means of jacks and anchorages.postulationThe act of postulating or something postulated.postventionAn intervention conducted after a suicide, largely taking the form of support for the bereaved.potamogeton(botany) Any of the plants of the genus Potamogeton.potentationpotentiationpovertician(politics, derogatory) Someone who is paid to work with the poor, especially one who profits at the expense of the poor; A welfare worker.powerdomainAlternative form of power domain.prallethrinA certain pyrethroid insecticide.pralmorelin(pharmacology) A particular growth hormone–releasing hormone analogue.pralnacasanA caspase-1-specific peptidomimetic pyridazinodiazepine inhibitor.pranoprofen(pharmacology) A nonsteroidal anti-inflammatory drug used in ophthalmology.pravastatin(organic chemistry, pharmacology) A statin used to lower blood cholesterol levels, especially after a heart attack.preablationprior ablationpreabortionBefore abortion (termination of pregnancy).preacherman(religion) A preacherpreadoptionBefore adoption.precampaignBefore a campaign.precipitron(historical) An early electrostatic air purifier.predecisionA preliminary decision, or one made in advancepredicationA proclamation, announcement or preaching.predilutiondilution in advance of another processprediluvianBefore the Flood; antediluvian.predivision(biology) division of a chromosome prior to meiosispredominion(rare) predominance; prevalence; superior influence or power.preejectionOccurring prior to ejection.preelectionAn election beforehand.preenactionThe process of preenacting.prefigation(linguistics, rare) Synonym of prefixation.prefinition(rare) a previous limitation or definitionprefixation(linguistics) The adding of a prefix to a word.preformalinPrior to treatment with formalinprefreshman(US, sometimes attributive) A student who has not yet become a freshman.preignition(automotive) The premature detonation of a fuel charge in Four-stroke cycle engines.preincision(surgery) Prior to incisionpreinfusionAny procedure that proceeds infusion (e.g. the wetting of ground coffee prior to production of espresso).preinvasionBefore an invasion; the state before an invasion.prelibationA tasting beforehand, or by anticipation; a foretaste.prelockdownBefore a lockdown.prelocution(linguistics) a mental planning act before a verbal locution in a speech actpreluncheonBefore luncheon.premetazoanPrior to the evolution of metazoanspremonitionA clairvoyant or clairaudient experience, such as a dream, which resonates with some event in the future.premunition(medicine) Immunization due to having had the disease before.premutationOf or relating to a premutation.prenylationisoprenylationpreparation(uncountable) The act of preparing or getting ready.prepetition(law) Of a claim, event, or condition existing prior to a bankruptcy petition.preposition(grammar, broad sense) An adposition.preprotoxinThe precursor of a protoxinprepupationprior to pupationprerevisionPrior to revisionprerotationA swirling motion in fluid entering a pump.presanctionBefore the introduction of a sanction.presbytinanAny leaf monkey of the genus Presbytis.prescissionThe act or result of prescinding.presspersonA member of the press; a journalist.presuburbanPrior to the development of a suburb.presumptionThe act of presuming, or something presumed.pretaxationBefore taxation.preterhumanMore than human; superhuman.preteritionThe act of passing by, disregarding or omitting.prethrombinA subunit of prothrombinprevacationBefore a vacation.princessian(rare) Of or characteristic of a princess.privatopianRelating to a privatopia.proabortionSupportive of the practice and/or legalization of abortion.prochemerin(biochemistry) A precursor of chemerin.prochymosin(biochemistry) The precursor of chymosinprocollagen(biochemistry) The precursor of collagen; it is formed in fibroblasts and converted to collagen by a peptidase.procreationThe process by which an organism produces others of its biological kindprocrusteanEnforcing strict conformity through disregard of individual differences or special circumstances.procurationThe act of procuring; procurement.procyanidinproanthocyanidinprodefensin(biochemistry) Any of a class of matrix proteins that are precursors to defensins.prodelision(phonology) A form of elision in which the latter word loses its first vowels.prodigiosin(microbiology) A red pigment produced by certain bacteria.profanationThe act of profaning; desecration, blasphemous behaviour, defilement.progenation(rare) The act of progenatingprogestagen(biochemistry, steroids) Alternative spelling of progestogen.progestogen(biochemistry, steroids) The steroid hormone progesterone.proglucagon(biochemistry) Any of a group of polypeptides that are cleaved to produce glucagon.proglutelin(biochemistry) A glutelin precursorprogranulinA precursor protein to granulin.progressionThe act of moving from one thing to another.prohepcidin(biochemistry) A propeptide that is a precursor of hepcidinprohibitionAn act of prohibiting, forbidding, disallowing, or proscribing something.prokeimenon(Christianity) In the liturgical practice of the Orthodox Church and Byzantine Rite, a psalm or canticle refrain sung responsorially at certain points of the Divine Liturgy or the Divine Office, usually to introduce a scripture reading.proletarianOf or relating to the proletariat.prolockdownIn favor of a lockdown (a confinement as security measure).prolocution(obsolete) An introductory speech.promanation(obsolete) The act of flowing forth; emanation.prooflisten(ambitransitive) To listen, usually to a recording, for errors.propagationThe multiplication or natural increase in a population.propalation(rare) disclosure, revelationproperation(obsolete, rare) haste; hurrying.prophalloin(biochemistry) A toxic cyclic peptide obtained from the mushroom Amanita phalloidespropicillin(pharmacology) A penicillin.propination(historical) The right to distill spirits.propogationMisspelling of propagation.proposition(uncountable) The act of offering (an idea) for consideration.prorogationCausing something to last longer or remain in effect longer; prolongation, continuance.prosecretin(biochemistry) A precursor to secretin, activated by gastric acidprosecutionThe act of prosecuting a scheme or endeavor.prospection(uncommon) The action of looking forward into the future. Formed by analogy with retrospection.prostrationThe act or condition of prostrating oneself (lying face-down), as a sign of humility.prosumption(sociology) The contribution to product development by end users.protantheanAny sea anemone of the suborder ProtanthaeaproteotoxinA protein that produces proteotoxicityprothrombin(biochemistry) A glycoprotein, produced in the liver, that is converted into thrombin during bleeding and subsequent clotting.prothymosin(biochemistry) Any precursor of a thymosin polypeptideprotochelin(organic chemistry) A tris(catecholamide) siderophore present in the bacterium Azotobacter vinelandiiprotodeaconA highly ranked non-monastic deacon who has special privileges.protoglobin(biochemistry) A simple globin, found in some archaea, that can bind oxygen and carbon monoxideprotoglycanMisspelling of proteoglycan.protohaeminAlternative spelling of protohemin.protointron(genetics) A section of RNA that develops into an intronprotomodernOf an earlier style approaching what is now modern.protonation(chemistry) The addition of a proton (hydrogen ion) to an atom, molecule or ion, normally to generate a cation.protopectinSynonym of pectose.protophorinAlternative form of protoporphyrin.protothecanAny alga of the genus Prototheca.protraction(uncountable) The condition of being protracted.provacationMisspelling of provocation.provocationThe act of provoking, inciting or annoying someone into doing something.prulaurasin(organic chemistry) A glycoside found in cherry laurel leaves.pruvanserinA selective 5-HT2A receptor antagonist investigated as an insomnia treatment.psalmodicon(music) A simple zither-like single-stringed chordophone (stringed instrument), played with a bow, of Scandinavian origin.psalmodikonAlternative spelling of psalmodicon.psalmotoxinAny of a group of toxins in the venum of tarantulas of the genus PsalmopoeuspseudoalignTo undergo pseudoalignmentpseudograinSynonym of pseudocereal.pseudohumanApparently, but not actually, human.pseudolysin(biochemistry) A peptidase enzyme that has the characteristics of a lysinpseudomucinSynonym of metalbumin.pseudomycinAny of a class of peptide antimycotics isolated from Pseudomonas syringae.pseudopilin(biochemistry) A form of pilin that lacks disulfide bonds between its foldspseudoqueenA bee that temporarily takes over the role of a lost or dead queenpsocopteranAny insect of the order Psocoptera.psychorubin(organic chemistry) A cytotoxic naphthoquinone obtained from Psychotria rubra.ptaeroxylin(organic chemistry) A particular oxepinochromone.pterioideanAny bivalve mollusc of the superfamily Pterioideapterocarpan(organic chemistry) Any of various isoflavonoid derivatives found in the Fabaceae familypterocarpinA pterocarpan, 3-methoxy-8,9-methylenedioxypterocarpan, present in camwoodpterorhodinA red pigment in the melanophores of tree frogs.publicationThe act of publishing printed or other matter.pullulationA teeming, swarming, or multiplying.punaglandin(organic chemistry) Any of a group of chlorinated prostaglandin present in some octocoralspunctuationAn act of punctuating.punicafolin(organic chemistry) An ellagitannin found in the leaves of Punica granatum (pomegranate) and in Phyllanthus emblica (Indian gooseberry).punicalagin(organic chemistry) A particular class of ellagitanninspuniglandinMisspelling of punaglandin.pupariationThe formation of a puparium.purgatorianOne who holds to the doctrine of purgatory.purothionin(biochemistry) Any of a group of toxic cross-linked cyclic oligopeptidespurpogallinMisspelling of purpurogallin.pustulationThe act of producing pustules.pygostylianAny avialan of the clade Pygostylia, that has a pygostylepyoluteorinAn antimicrobial compound found in Pseudomonas.pyrazoxyfenThe herbicide 2-[4-(2,4-dichlorobenzoyl)-1,3-dimethylpyrazol-5-yloxy]acetophenone.pyridomycinAn antibiotic that acts against mycobacteriapyrobitumenAn amorphous fossilized petroleum mineraloid.pyrogallein(organic chemistry) A poorly-characterised nitrogenous derivative of pyrogallolpyrovidiconA pyroelectric vidicon.pyroxanthin(organic chemistry) A yellow, crystalline substance obtained from creosote etc; it seems to be a polycyclic aromatic hydrocarbon.