peptone
Any water-soluble mixture of polypeptides and amino acids formed by the partial hydrolysis of protein.

peptones
plural of peptone

peptonisation
Alternative form of peptonization.

peptonization
The conversion of a protein into peptones under the influence of the enzyme pepsin

peptoprime
A sequence of amino acids that has never been found in any protein in any species; some of these sequences may be incompatible with life.

peptoprimes
plural of peptoprime

peptosome
A spherical vesicle composed of peptides

peptosomes
plural of peptosome

perbromate
The oxyanion of bromine BrO₄⁻.
Any salt (of perbromic acid) containing this ion.

perbromates
plural of perbromate

perbromide
A bromide having a higher proportion of bromine than any other bromide of the same substance or series.

perbromides
plural of perbromide

percarbide
Any of a series of compounds containing the largest proportion of carbon

percarbides
plural of percarbide

percarbonate
Any of a family of perhydrates of carbonate compounds.
Sodium percarbonate or a product containing it.

percarbonates
plural of percarbonate

perceptron
an element, analogous to a neuron, of an artificial neural network consisting of one or more layers of artificial neurons
a network of such elements.

perceptrons
plural of perceptron

percha
Synonym of gutta-percha.

perchloride
A chloride having a higher proportion of chlorine than any other chloride of the same substance or series.

perchlorides
plural of perchloride

perchlorobenzene
hexachlorobenzene

perchloroethylene
Synonym of tetrachloroethylene, a nonflammable, non-polar solvent with low toxicity, especially in the dry-cleaning trade

perchloroethylenes
plural of perchloroethylene

perchloromethane
Carbon tetrachloride.

perchloropentacyclodecane
Mirex.

percolation
The seepage or filtration of a liquid through a porous substance.

percolations
plural of percolation

perezone
A sesquiterpene quinone found in various Perezia species.

perflubutane
A contrast agent.

perfluoralkyl
Alternative form of perfluoroalkyl.

perfluoroalkoxy
A perfluoro derivative of an alkoxy radical

perfluoroalkyl
Any perfluoro derivative of an alkyl group.

perfluoroalkyls
plural of perfluoroalkyl

perfluoroaryl
Any perfluoro derivative of an aryl group

perfluoroaryls
plural of perfluoroaryl

perfluorobutane
A colourless gaseous fluorocarbon, C₄F₁₀, used in fire extinguishers and in ultrasound imaging

perfluorobutanoate
Any perfluoro derivative of a butanoate group or anion

perfluorobutanoates
plural of perfluorobutanoate

perfluoroctane
Alternative form of perfluorooctane.

perfluorocyclobutane
octafluorocyclobutane

perfluorodecalin
A fluorocarbon, a derivative of decalin in which all of the hydrogen atoms are replaced by fluorine atoms.

perfluorodecanoate
Any perfluoro derivative of a decanoate group or anion

perfluorodecanoates
plural of perfluorodecanoate

perfluorodecyltrichlorosilane
A colourless liquid chemical with the molecular formula C₁₀H₄Cl₃F₁₇Si, whose molecules form self-assembled monolayers.

perfluoroether
Any ether in which every hydrogen atom has been replaced by fluorine

perfluoroethers
plural of perfluoroether

perfluoroglutarate
a perfluoro derivative of the glutarate group

perfluoroglutarates
plural of perfluoroglutarate

perfluoroheptane
Any perfluoro derivative of a heptane, but especially n-perfluoroheptane

perfluorohexacene
Any perfluoro derivative of a hexacene

perfluorohexane
The saturated aliphatic fluorocarbon C₆F₁₄

perfluorohexanes
plural of perfluorohexane

perfluorohexanoate
Any perfluoro derivative of a hexanoate group or anion

perfluorohexanoates
plural of perfluorohexanoate

perfluorohexyl
Any perfluoro derivative of a hexyl radical

perfluoromethylcyclohexane
A fluorocarbon liquid derived from hydrocarbon methylcyclohexane used as a solvent for gases.

perfluorononanoate
Any perfluoro derivative of a nonanoate group or anion

perfluorononanoates
plural of perfluorononanoate

perfluorooctane
A derivative of octane, C₈F₁₈, in which every hydrogen atom has been replaced by those of fluorine

perfluorooctanesulfonate
Alternative form of perfluorooctane sulfonate.

perfluorooctyl
Any perfluoro derivative of an octyl radical

perfluoropentacene
The completely fluorinated derivative of pentacene; it is an organic semiconductor

perfluoropentane
Any perfluoro derivative of a pentane, but especially n-perfluoropentane

perfluoropolyether
Any polyether in which every carbon atom has been replaced by fluorine.

perfluoropolyethers
plural of perfluoropolyether

perfluoropolymer
Any polymer derived from another by replacing all (or most) of the hydrogen atoms by those of fluorine

perfluoropolymers
plural of perfluoropolymer

perfluoropropane
The fluorocarbon C₃F₈

perfluorosilane
Any perfluoro derivative of a silane

perfluorosilanes
plural of perfluorosilane

perfluorotrihexylamine
A chemical compound, C₁₈F₃₉N.

perfluoroundecanoate
Any perfluoro derivative of an undecanoate group or anion

perfluoroundecanoates
plural of perfluoroundecanoate

perflurobutane
Misspelling of perfluorobutane.

perflutren
A preparation of microspheres used as an ultrasound contrast agent

perfrication
A thorough rubbing, as with an ointment or embrocation.

perfrications
plural of perfrication

perfusant
Alternative form of perfusate.

perfusants
plural of perfusant

perfusate
The fluid used in perfusion.

perfusates
plural of perfusate

perhexiline
A prophylactic antianginal agent.

perhexilline
Alternative form of perhexiline.

perhydrate
a hydrate in which the water molecules have been replaced by molecules of hydrogen peroxide

perhydrates
plural of perhydrate

perhydroisoquinoline
decahydroisoquinoline

perhydroisoquinolines
plural of perhydroisoquinoline

perhydrol
A stabilised solution of hydrogen peroxide

perhydrolysis
Reaction with hydrogen peroxide to form two hydroxides or alcohols

perhydrosqualene
The fully saturated triterpene derived from squalene

perhydroxyl
Synonym of hydroperoxyl.

perhydroxyls
plural of perhydroxyl

pericardin
A protein, similar to collagen, that is involved in the morphogenesis of heart epithelium in some insects

pericentrin
A protein that binds to calmodulin and is expressed in the centrosome, an integral component of the pericentriolar material.

pericondensation
The condensation of neighbouring aromatic systems (often in the same molecule) typically to form a fused aromatic system

peridotite
A rock consisting of small crystals of olivine, pyroxene and hornblende; the major constituent of the Earth's mantle.

peridotites
plural of peridotite

perifusate
Any liquid used in perifusion

perifusates
plural of perifusate

perifusion
fluid flow, especially that of a solution of drugs or a suspension of cells in a biological in vivo or in vitro system.

perifusions
plural of perifusion

perigloea
The entire gelatinous investment of a diatom.

perilenequinone
Misspelling of perylenequinone.

perilipin
Any of a family of proteins that associate with the surface of lipid droplets, and whose phosphorylation is essential for the mobilization of fats in adipose tissue.

perilipins
plural of perilipin

perillaldehyde
perilla aldehyde: a natural organic compound found most abundantly in the annual herb perilla, but also in a wide variety of other plants and essential oils. It is a monoterpenoid containing an aldehyde functional group.

perillartine
The oxime of perillaldehyde.

perimineralization
Misspelling of permineralization.

perimolysis
dental erosion caused by gastric acid from the stomach coming into contact with the teeth

perine
A sporoderm layer surrounding the exine of many spores

perines
plural of perine

periodate
Either of two oxyanions of iodine; any salt containing these anions.

periodates
plural of periodate

periodid
Archaic form of periodide.

periodide
An iodide containing a higher proportion of iodine than any other iodide of the same substance or series

periodides
plural of periodide