peptide
Concise Oxford English Dictionary © 2008 Oxford University Press:
peptide /ˈpɛptʌɪd/
▶noun Biochemistry a compound consisting of two or more amino acids linked in a chain.
– origin early 20th cent.: from Ger. Peptid, back-form. from Polypeptid ‘polypeptide’.
'peptide' also found in these Oxford entries:

