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

• porogamic
• porogamies
• porogamy
• poromeric
• poroscope
• poroscopes
• poroscopic
• poroscopies
• poroscopy
• porose
• poroses
• porosis
• porosities
• porosity
• porous
• porous alloys
• porousness
• porousnesses
• porous plaster
• porpentine
• porpentines
• porpess
• porpesse
• Porphyra
• porphyria