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Pronunciation: (thē"u-fil'ēn, -in), [key]
n. Pharm.
a white, crystalline, poisonous alkaloid, C7H8N4O2, an isomer of theobromine, extracted from tea leaves or produced synthetically: used to relieve bronchial spasms, in the treatment of certain heart conditions, and as a diuretic.

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

Theophrastustheophylline ethylenediamine
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