Dictionary

amino acid

noun

biology : any one of many acids that occur naturally in living things and that include some which form proteins

Full Definition of AMINO ACID

:  an amphoteric organic acid containing the amino group NH2; especially :  any of the various amino acids having the amino group in the alpha position that are the chief components of proteins and are synthesized by living cells or are obtained as essential components of the diet

First Known Use of AMINO ACID

1898

amino acid

noun    (Medical Dictionary)

Medical Definition of AMINO ACID

:  an amphoteric organic acid containing the amino group NH2; especially :  alpha-amino acid

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