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Science & Tech > Chemistry > Radicals


Now updated for CSW15. New words, if any, and new inflections of existing words, are shown in red.


acetoxyl a univalent radical.
acetylate to introduce the acetyl radical into (a compound).
acetylative acting as an acetylate.
acrylyl a type of monovalent group.
adenyl a univalent radical.
alanyl a universal radical.
alkoxy containing a univalent radical composed of alkyl united with oxygen.
allyl an organic radical existing esp in oils of garlic and mustard.
allylic of or like an allyl, a kind of organic radical.
alphyl a univalent radical.
amyl a univalent radical.
arsino containing a certain univalent chemical radical.
aryl any aromatic univalent hydrocarbon radical.
benzal a radical whose oxide is benzaldehyde or oil of bitter almonds.
benzenecarbonyl a systemic name for benzoyl.
benzil a double benzoyl radical.
benzoyl a compound radical, the base of benzoic acid.
benzyl a compound radical, related to toluene and benzoic acid.
benzylic of or like benzyl.
benzylidine a radical whose oxide is benzaldehyde or oil of bitter almonds.
biphenyl a hydrocarbon consisting of two phenyl groups, used as a fungicide and in dye-manufacture.
butyl a compound radical, regarded as butane, less one atom of hydrogen.
carbamoyl a radical derived from carbamic acid.
carbamyl a radical derived from carbamic acid.
carbene a neutral divalent free radical, such as methylene.
carbonyl the divalent group CO, present in ketones, aldehydes, etc.
carbonylic relating to carbonyl.
carboxyl the radical COOH.
carboxylic relating to carboxyl.
cetyl a univalent radical.
chromyl a bivalent radical.
cinnamyl a radical found in cinnamic compounds.
dibutyl having two butyl groups.
ethinyl a univalent chemical radical.
ethoxy a univalent chemical radical.
ethoxyl a univalent chemical radical.
ethyl the base (C2H5) of common alcohol, ether, etc.
ethynyl a univalent chemical radical.
ferrocyanogen the quadrivalent radical of the ferricyanides.
formyl a radical derived from formic acid.
galactosyl a glycosyl radical derived from galactose.
glyceryl a radical derived from glycerol by the removal of one or more hydroxyl groups.
glycosyl a radical derived from glucose.
glycyl a radical derived from glycine.
hexyl a radical derived from a hexose.
hexylic of or like hexyl.
homolytic decomposing into two uncharged atoms or radicals.
hydroxyl a compound radical, or unsaturated group, HO, consisting of one atom of hydrogen and one of oxygen.
hydroxylic pertaining to a hydroxyl.
isopropyl a radical derived from propane.
mercaptan a substance analogous to an alcohol, with sulphur instead of oxygen.
methoxyl containing the radical CH3O, derived from methanol.
methyl the radical (CH3) of wood (or methyl) alcohol.
methylene the radical CH2, which is the basic unit of hydrocarbon chains.
naphthyl a hydrocarbon radical regarded as the essential residue of naphthalene.
nitrosyl the radical NO, called also the nitroso group.
nitroxyl the group NO2, usually called the nitro group.
nitryl the group NO2, usually called the nitro group.
octyl a type of hydrocarbon radical.
oxonium a univalent basic radical in which oxygen is tetravalent.
pentyl a radical derived from a pentane.
phenoxy containing a radical derived from phenol.
phenyl a cyclic radical derived from benzene by the loss of one hydrogen atom.
phenylic pertaining to, derived from, or containing, phenyl.
phosphonium the radical PH4, analogous to ammonium.
phosphoryl the radical PO, regarded as the typical nucleus of certain compounds.
propenyl a hydrocarbon radical related to propene.
propyl the hypothetical radical C3H7, regarded as the essential residue of propane and related compounds.
propylamine an amine of propyl.
radical fundamental (noun) a group of atoms behaving like a single atom and passing unchanged from one compound to another
radically (Adv.) RADICAL, fundamental.
succinyl the radical of succinic acid.
sulfinyl the bivalent chemical group, SO.
sulfonium the positively charged group SH3, its salts or derivatives.
sulfonyl a bivalent sulphone group.
sulfuryl a bivalent sulphone group.
sulphinyl the bivalent chemical group SO.
sulphonium the positively charged group SH3, its salts or derivatives.
toluyl any one of the three hypothetical radicals corresponding to the three toluic acids.
tolyl a hydrocarbon radical, CH3.
triatomically (Adv.) TRIATOMIC, having three atoms.
univalency the state of being univalent.
univalent having a valency of one, capable of combining with one atom of hydrogen or its equivalent; (noun) a univalent radical.
uranyl the radical UO2, present in some compounds of uranium.
vinylidene a bivalent radical, a compound of carbon and hydrogen.