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Dictionary

pu•rine

Pronunciation: (pyoor'ēn, -in), [key]
—n. Chem., Biochem.
1. a white, crystalline compound, C₅H₄N₄, from which is derived a group of compounds including uric acid, xanthine, and caffeine.
2. one of several purine derivatives, esp. the bases adenine and guanine, which are fundamental constituents of nucleic acids.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

Purim

purism

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