ˌthīəˈridəˌzēn, -_zə̇n noun
( -s )
Etymology: thio- + pipe rid ine + phenothi azine
: 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 behavioral problems in children