World English Dictionary
purine or purin (ˈpjʊəriːn, ˈpjʊərɪn)
1.  a colourless crystalline solid that can be prepared from uric acid. Formula: C5H4N4
2.  Also called: purine base any of a number of nitrogenous bases, such as guanine and adenine, that are derivatives of purine and constituents of nucleic acids and certain coenzymes
[C19: from German Purin; see pure, uric,-ine²]
purin or purin
[C19: from German Purin; see pure, uric,-ine²]

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