n.
Pronunciation: ˌ hek-s ə - ' bär-b ə - ˌ to ̇ l
Function: noun
Etymology: hexo- (fr. hexa- ) + barbital
Date: 1941
: a barbiturate C 12 H 16 N 2 O 3 used as a sedative and hypnotic and in the form of its soluble sodium salt as an intravenous anesthetic of short duration