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

• yaqonas
• YAR
• Yarborough
• yard
• yardage
• yardages
• yardang
• yardangs
• yardarm
• yardarms
• yardbird
• yardbirds
• yarded
• Yardie
• Yardie squad
• yarding
• zebrinny
• zebroid
• zebrula
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• zebrule
• zebrules
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• zebub
• zebubs