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

• dusking
• duskish
• duskishly
• duskishness
• duskishnesses
• duskly
• duskness
• dusknesses
• dusks
• dusky
• dust
• dust bag
• dust bags
• dust-ball
• dust-balls
• dust-bath
• dust-baths
• dustbin
• dustbins
• dust bowl
• Dust Bowl
• dust bowls
• dust-brand
• dust-brands
• dust-brush