Wordnet 3.0
NOUN (1)
1. 
 (biochemistry) purine base found in DNA and RNA; 
 pairs with thymine in DNA and with uracil in RNA; 
[syn: adenine, A]
WordNet (r) 3.0 (2006):
adenine
    n 1: (biochemistry) purine base found in DNA and RNA; pairs with
         thymine in DNA and with uracil in RNA [syn: adenine, A]