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

• carpet beating
• carpet-bed
• carpet-bedding
• carpet-beds
• carpet beetle
• carpet beetles
• carpet biter
• carpet biters
• carpet-bomb
• carpet-bombed
• carpet-bombing
• carpet-bombs
• carpet bug
• carpet bugs
• carpeted
• carpeting
• carpetings
• carpet-knight
• carpet-knights
• carpetmonger
• carpetmongers
• carpet-moth
• carpet-moths
• carpet plot
• carpet plots