Search Result for "arginine": 
Wordnet 3.0

NOUN (1)

1. a bitter tasting amino acid found in proteins and necessary for nutrition; its absence from the diet leads to a reduced production of spermatozoa; 



WordNet (r) 3.0 (2006):

arginine
    n 1: a bitter tasting amino acid found in proteins and necessary
         for nutrition; its absence from the diet leads to a reduced
         production of spermatozoa