chemical science, chemistry - the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions

building block, unit - a single undivided natural thing occurring in the composition of something else; "units of nucleic acids"

acyl, acyl group - any group or radical of the form RCO- where R is an organic group; "an example of the acyl group is the acetyl group"

alcohol group, alcohol radical - the chemical group -OH

aldehyde group, aldehyde radical - the chemical group -CHO

alkyl, alkyl group, alkyl radical - any of a series of univalent groups of the general formula CnH2n+1 derived from aliphatic hydrocarbons

allyl, allyl group, allyl radical - the univalent unsaturated organic radical C3H5; derived from propylene

amino, amino group - the radical -NH2

azido group, azido radical - the univalent group N3- derived from hydrazoic acid

azo group, azo radical - the bivalent group -N=N- united to two hydrocarbon groups

benzyl, benzyl group, benzyl radical - the univalent radical derived from toluene

benzoyl group, benzoyl radical - the univalent radical derived from benzoic acid

molecule - (physics and chemistry) the simplest structural unit of an element or compound

arsenic group, cacodyl group, cacodyl radical, cacodyl - the univalent group derived from arsine

carbonyl group - the bivalent radical CO

carboxyl, carboxyl group - the univalent radical -COOH; present in and characteristic of organic acids

chromophore - the chemical group that gives color to a molecule

cyanide group, cyanide radical, cyano group, cyano radical - the monovalent group -CN in a chemical compound

glyceryl - a trivalent radical derived from glycerol by removing the three hydroxyl radicals

hydrazo group, hydrazo radical - the bivalent group -HNNH- derived from hydrazine

hydroxyl, hydroxyl group, hydroxyl radical - the monovalent group -OH in such compounds as bases and some acids and alcohols

ketone group - a group having the characteristic properties of ketones

methylene, methylene group, methylene radical - the bivalent radical CH2 derived from methane

propyl, propyl group, propyl radical - the monovalent organic group C3H7- obtained from propane

butyl - a hydrocarbon radical (C4H9)

nitro group - the group -NO3

nitrite - the radical -NO2 or any compound containing it (such as a salt or ester of nitrous acid)

uranyl, uranyl group, uranyl radical - the bivalent radical UO2 which forms salts with acids

vinyl, vinyl group, vinyl radical - a univalent chemical radical derived from ethylene