THEOPHYLLINE Meaning of THEOPHYLLINE in English theophylline BrE AmE ˌθi ː ‿ə ˈfɪl iːn -ɪn, -aɪn; θi ˈɒf ɪ liːn, -ə-, -lɪn, -laɪn Longman Pronunciation English Dictionary. Английский словарь произношений Longman. 2012