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theophylline

the·oph·yl·line [ thee óffəlin, th ō fí ln ]


noun 
Definition:
 
chemical used medicinally: a white crystalline alkaloid. Source: tea leaves or synthetically made. Use: vasodilator, diuretic, treatment of bronchial asthma. C7H8N7O2.H2O

[Late 19th century. < modern Latin Thea (see theine) + phyllo-]
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