See also: aminoacid and aminoàcid

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Etymology edit

See amine and acid. Likely a calque of German Aminosäure, which is attested earlier.

Noun edit

amino acid (plural amino acids)

  1. (biochemistry) Any organic compound containing both an amino and a carboxylic acid functional group.
  2. (biochemistry) Any of the twenty naturally occurring α-amino acids (having the amino, and carboxylic acid groups on the same carbon atom), and a variety of side chains, that combine, via peptide bonds, to form proteins.

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