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

• spermophile
• spermophiles
• spermophyte
• spermophytes
• spermophytic
• -spermous
• spermous
• sperms
• sperm whale
• sperm whales
• sperre
• sperred
• sperres
• sperring
• sperrylite
• sperrylites
• sperse
• spersed
• sperses
• spersing
• sperst
• sperthe
• spessartine
• spessartines
• spessartite