thioridazine
nounUK /ˌθʌɪ.ə(ʊ).ɹɪˈdeɪ.ziːn/ · US /ˌθaɪ.əˈɹɪd.əˌziːn/
Etymology From thio- + (pipe)rid(ine) + (phenothi)azine.
1
Medicine, Pharmacology, Sciences A synthetic compound derived from phenothiazine, used as a tranquillizer, chiefly in the treatment of mental illness.