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

• diegesis
• diegetic
• die hard
• diehard
• diehards
• die in one's boots
• die in one's shoes
• die in the last ditch
• dieldrin
• dieldrins
• dielectric
• dielectric constant
• dielectric heating
• dielectrics
• dielytra
• dielytras
• diencephalic
• diencephalon
• diencephalons
• diene
• dienes
• die off
• die out
• diereses
• dieresis