- any of a large group of organic acids containing a carboxyl group, COOH, and an amino group, NH
- any of the amino acids, usually about 20, that link together into polypeptide chains to form proteins that are necessary for all life: in general, they are water-soluble, crystalline, amphoteric electrolytes having mirror-image isomeric forms with right and left optical activity: ten of these (essential amino acids) cannot be synthesized by the human body and must be consumed
amino acidamino acid
(plural amino acids)
- (organic chemistry) Any organic compound containing both an amino and a carboxylic acid functional group.
- (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.
- imino acid
amino acid - Medical Definition