n.
Pronunciation: ˌ a-m ə - ' nä-f ə -l ə n
Function: noun
Etymology: amino + theo phylline
Date: 1934
: a theophylline derivative C 16 H 24 N 10 O 4 used especially to stimulate the heart in congestive heart failure and to dilate the air passages in respiratory disorders (as asthma)