n.
Pronunciation: th ē - ' ä-f ə -l ə n
Function: noun
Etymology: International Scientific Vocabulary theo- (fr. New Latin thea tea) + phyll- + 2 -ine
Date: circa 1894
: a feebly basic bitter crystalline compound C 7 H 8 N 4 O 2 present in tea leaves that is isomeric with theobromine and is used in medicine especially as a bronchodilator