1. a combining form used in the names of chemical compounds in which the amino group is present: aminobenzene.

combining form

  1. indicating the presence of an amino groupaminobenzoic acid

1887, as an element in compound words involving chemicals, from comb. form of amine. Amino acid is attested from 1898.


  1. Containing the radical NH2 combined with a nonacid organic radical:aminobenzoic acid.

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