Search Result for "tryptophan": 
Wordnet 3.0

NOUN (1)

1. an amino acid that occurs in proteins; is essential for growth and normal metabolism; a precursor of niacin;
[syn: tryptophan, tryptophane]



WordNet (r) 3.0 (2006):

tryptophan
    n 1: an amino acid that occurs in proteins; is essential for
         growth and normal metabolism; a precursor of niacin [syn:
         tryptophan, tryptophane]