n.
Pronunciation: ˌ se-k ō - ' bär-b ə - ˌ to ̇ l
Function: noun
Etymology: from Seco nal, a trademark + barbital
Date: 1951
: a barbiturate C 12 H 18 N 2 O 3 that is used chiefly in the form of its bitter hygroscopic sodium salt as a hypnotic and sedative