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

• hygroscopical
• hygroscopicities
• hygroscopicity
• hygroscopic salt
• hygrostat
• hygrostats
• hying
• hyke
• lichen
• lichened
• lichenin
• lichenins
• lichenism
• lichenisms
• lichenist
• lichenists
• lichenoid
• lichenologist
• lichenologists
• lichenology
• lichenose
• lichenous
• lichens
• liches
• lichgate