pyrroline
Any of three isomeric monounsaturated heterocycles having a five-membered ring and one nitrogen atom C₄H₇N; any derivative of these compounds

pyrrolines
plural of pyrroline

pyrrolo
A functional group consisting of a pyrrole ring fused onto another part of the molecule.

pyrroloquinolinequinone
Any quinone derived from a pyrroloquinoline; the third known redox cofactor in bacteria, after nicotinamide and flavin.

pyrroloquinolinequinones
plural of pyrroloquinolinequinone

pyrrolotriazine
An organic compound composed of a pyrrole ring fused to a triazine ring, or a derivative thereof.

pyrrolotriazines
plural of pyrrolotriazine

pyrrolyl
A radical derived from pyrrole

pyrrolyls
plural of pyrrolyl

pyrromethene
dipyrrin

pyrromethenes
plural of pyrromethene

qaqarssukite
A barium rare earth fluorocarbonate mineral with ideal formula BaCe(CO₃)₂F

qeltite
A vitreous, light brown mineral.

quadpolaron
A quasiparticle composed of two bipolarons

quadpolarons
plural of quadpolaron

quadrangularin
Any of a class of stilbene derivatives found in Cissus quadrangularis.

quadrangularins
plural of quadrangularin

quadranucleotide
a codon containing four nucleotides

quadranucleotides
plural of quadranucleotide

quadraturism
An Italian genre of painting that used architectural elements to create illusions of perspective.

quadricyclane
A highly toxic norbornadiene isomer with potential applications in the storage of solar energy.

quadricyclanes
plural of quadricyclane

quadrigram
fourgram

quadriurate
A urate containing four as much of the uric acid constituent as an ordinary urate.

quadriurates
plural of quadriurate

quadroxalate
A complex of oxalate and oxalic acid

quadroxalates
plural of quadroxalate

quaiacol
The monomethyl ether of catechol

quakebuttock
A coward.

quakebuttocks
plural of quakebuttock

quartation
The act, process, or result (in the process of parting) of alloying a button of nearly pure gold with enough silver to reduce the fineness so as to allow acids to attack and remove all metals except the gold.

quartations
plural of quartation

quartene
butylene

quartine
A supposed fourth integument of an ovule, counting from the outside.

quartines
plural of quartine

quasicondensate
A material that has some, but not all, characteristics of a condensate

quasicondensates
plural of quasicondensate

quasielectron
A form of quasiparticle formed from an electron as it travels through a semiconductor.

quasielectrons
plural of quasielectron

quasienantiomer
Either of a pair of compounds, one of which is a derivative of the enantiomer of the other (and has very similar chemical and physical properties).

quasienantiomers
plural of quasienantiomer

quasiferromagnet
An analogue of a ferromagnet produced in a spintronic environment.

quasiferromagnets
plural of quasiferromagnet

quasifission
Partial fusion followed by fission of very large atomic nuclei, a possible means of generating neutron-rich isotopes

quasineutron
A quasiparticle equivalent to a neutron.

quasineutrons
plural of quasineutron

quasipartons
plural of quasiparton

quasisolution
A generalized solution to certain ill-posed problems that is well-posed in the sense of Hadamard.

quasisolutions
plural of quasisolution

quassin
A very bitter triterpenoid lactone, extracted as white crystals from the quassia tree, used in traditional Chinese medicine

quassine
Archaic form of quassin.

quassines
plural of quassine

quassins
plural of quassin

quaternation
The conversion of an amine into a quaternary ammonium compound.

quaternations
plural of quaternation

quaterpolymer
A copolymer derived from four species of monomer.

quaterpolymers
plural of quaterpolymer

quazodine
A bronchodilator.

quebrachamine
An alkaloid obtained from the dried bark of the quebracho tree.

quebrachine
An alkaloid, probably identical to yohimbine, from the quebracho tree

quercinitol
scylloinositol

quercitannin
Tannic acid derived from oak galls.

quercitannoform
Tannoform derived from quercitannin or quercitannic, rather than gallotannic, acid.

quercitin
A flavonoid found in fruits, vegetables, leaves and grains.

quercitron
A yellow dye obtained from the bark of the black oak.
The black oak tree, Quercus velutina, indigenous to North America.

quercitrons
plural of quercitron

queuine
A hypermodified derivative of guanine present in the anticodon of some tRNAs

quiescin
Any of a family of proteins isolated from quiescent lung fibroblasts.

quiescins
plural of quiescin

quiflapon
A lipooxygenase inhibitor.

quimioluminescence
Misspelling of chemioluminescence.

quimioluminiscence
Misspelling of chemioluminescence.

quimiotherapy
Misspelling of chemotherapy, typically made by Spanish speakers.

quimp
A graphic element, used within maledicta balloons in comics to represent obscenities, curses and swearing, resembling the planet Saturn.

quimps
plural of quimp

quina
quinine

quinabactin
A synthetic sulfonamide that improves drought tolerance in plants.

quinacid
quinolinic acid

quinacids
plural of quinacid

quinacridone
An organic compound, a red powder with the molecular formula C₂₀H₁₂N₂O₂, used as a pigment.

quinacridones
plural of quinacridone

quinalizarin
1,2,5,8-tetrahydroxyanthraquinone

quinatoxine
Synonym of quinicine.

quinazolino
A radical derived from a quinazoline

quinazolinos
plural of quinazolino

quinazolone
A phenolic derivative of quinazoline 2-quinazolinol

quindecone
An unsaturated hydrocarbon related to valylene, probably 2-undecylbut-1-en-3-yne

quindim
A Brazilian baked custard dessert made chiefly from sugar, egg yolks, and ground coconut.

quindims
plural of quindim

quinetum
A mixture of the sulphates of the cinchona alkaloids: a cheap substitute for quinine sulphate.

quinhydrone
a molecular complex of a quinone and its corresponding hydroquinone

quinhydrones
plural of quinhydrone

quinia
quinine

quinicia
quinicine; quinotoxine

quinicine
An uncrystallizable alkaloid obtained by the action of heat from quinine, with which it is isomeric.

quinicines
plural of quinicine

quinide
A lactone of a quinic acid

quinides
plural of quinide

quinidine
A compound obtained from cinchona bark and used to treat irregularities of heart rhythm. It is an isomer of quinine.

quinidines
plural of quinidine

quinin
Archaic form of quinine.

quinina
Archaic form of quinine.

quinine
An alkaloid with the chemical formula C₂₀H₂₄N₂O₂, originally derived from cinchona bark (from plants of the genus Cinchona), used to treat malaria and as an ingredient of tonic water, which presents as a bitter colourless powder; also, a drug containing quinine or a chemical compound derived from it.

quinined
Supplemented with quinine.

quinines
plural of quinine

quinins
plural of quinin

quinocarbonium
Applied to coloured triarylcarbinol salts that might be regarded as either carbonium compounds or quinonoid derivatives.

quinochalcone
Any quinone derived from a chalcone

quinochalcones
plural of quinochalcone

quinodimethane
A highly reactive diene consisting of a benzene ring with two attached methylene groups.

quinodimethanes
plural of quinodimethane

quinoestradiol
The oestrogen 3-(cyclopentyloxy)estra-1,3,5(10)-triene-16a,17b-diol

quinogen
A hypothetical radical of quinine and related alkaloids.

quinohaemoprotein
Any of a class of proteins that have haem and quinone as cofactors

quinohaemoproteins
plural of quinohaemoprotein

quinoidation
Synonym of quinoidization.

quinoidine
A brownish resinous substance obtained as a by-product in the treatment of cinchona bark.

quinoidines
plural of quinoidine

quinoidization
Modification by addition of, or conversion to a quinone.

quinolinedione
A quinone derived from quinoline

quinolinemethanol
An alkaloid whose derivatives are used for a variety of pharmaceutical purposes, most notably quinine, which is used to treat malaria.

quinolinol
The fungistat and chelating agent 8-hydroxyquinoline (or other isomer)

quinolinols
plural of quinolinol