n.
Pronunciation: ˌ th ī - ə - ' ri-d ə - ˌ z ē n, -z ə n
Function: noun
Etymology: thi- + pipe rid ine + phenothi azine
Date: 1959
: a phenothiazine tranquilizer C 21 H 26 N 2 S 2 used in the form of its hydrochloride for relief of anxiety states and in the treatment of psychotic disorders and severe childhood behavioral problems