purine

Từ điển WordNet v3.1 - WordNet Dictionary

noun

1. any of several bases that are derivatives of purine
• Hypernyms:
base, alkali
• Hyponyms:
adenine, A, guanine, G
2. a colorless crystalline organic base containing nitrogen;
the parent compound of various biologically important substances
• Hypernyms:
base, alkali