This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. Any of various natural or synthetic compounds containing two or more amino acids linked by the carboxyl group of one amino acid to the amino group of another.

n. A class of organic compounds consisting of various numbers of amino acids in which the amine of one is reacted with the carboxylic acid of the next to form an amide bond.

n. The peptide bond itself.

n. amide combining the amino group of one amino acid with the carboxyl group of another; usually obtained by partial hydrolysis of protein

"The word peptide is derived from a Greek term meaning ‘small digestibles’; a peptide also forms a type of chain, or bond."

amide   

polypeptide    fibrinopeptide    endorphin   

octapeptide    polypeptide    mucopeptide    pentapeptide    dipeptide    lipopeptide    neuropeptide    tripeptide    peptide chain   

antigen    peptides    polypeptide    somatostatin    tyrosine    endogenous    T cell    ligand    receptor    lipid