purine /pūrˈin or pūrˈēn/ or purin /pūˈrin/

1. A cyclic double-ring crystalline substance C₅H₄N₄, which with oxygen forms uric acid (C₅H₄N₄O₃), and with many derivatives
2. Any of a number of these derivatives, cyclic diureides, such as adenine and guanine, esp one which is part of the nucleotide chains of DNA and RNA

• acerber
• acerbest
• acerbic
• acerbically
• acerbities
• acerbity
• acerose
• acerous
• acers
• a certain person
• acervate
• acervately
• acervation
• acervations
• aces
• acescence
• acescences
• acescencies
• acescency
• acescent
• acesulfame K
• acet-
• acetabula
• acetabular
• acetabulum