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

• drink to
• drink to the health of
• drink under the table
• drink up
• drip
• drip-dried
• drip-dries
• drip-dry
• drip-drying
• drip-fed
• drip-feed
• drip-feeding
• drip-feeds
• drip irrigation
• drip irrigations
• dripped
• drippier
• drippiest
• dripping
• dripping-pan
• dripping-pans
• dripping roast
• dripping roasts
• drippings
• dripping wet