(n) organic compounds containing an amino group and a carboxylic acid group, Syn. aminoalkanoic acid, Example:proteins are composed of various proportions of about 20 common amino acids
n. 1. an oily poisonous liquid amine obtained from nitrobenzene and used to make dyes and plastics and medicines. Same as aniline. Syn. -- aniline oil, phenylamine [ WordNet 1.5 ]