phenothiazine

[ fee-nuh-thahy-uh-zeen, -zin ]
/ ˌfi nəˈθaɪ əˌzin, -zɪn /

noun

Chemistry. a grayish-green to greenish-yellow, crystalline, water-insoluble solid, C12H9NS, used chiefly as an insecticide and vermifuge, and in the synthesis of pharmaceuticals.
Pharmacology. any of a class of medications used principally to treat psychotic symptoms, as delusions or hallucinations, and excessive excitability.

Origin of phenothiazine

First recorded in 1890–95; pheno- + thiazine

British Dictionary definitions for phenothiazine

phenothiazine
/ (ˌfiːnəʊˈθaɪəziːn) /

noun

a colourless to light yellow insoluble crystalline compound used as an anthelmintic for livestock and in insecticides. Formula: C 12 H 9 NS
any of several drugs derived from phenothiazine and used as strong tranquillizers and in the treatment of schizophrenia

Medical definitions for phenothiazine

phenothiazine
[ fē′nō-thīə-zēn′ ]

n.

A yellow organic compound used in veterinary anthelmintics. thiodiphenylamine
Any of a group of drugs derived from this compound and used as tranquilizers in the treatment of psychiatric disorders, such as schizophrenia.

Scientific definitions for phenothiazine

phenothiazine
[ fē′nō-thīə-zēn′ ]

A yellow or green, toxic organic compound used in insecticides and dyes and to treat infections with worms and other parasites in livestock. Chemical formula: C12H9NS.
Any of a group of drugs derived from this compound. Phenothiazines are dopamine antagonists and are used in the treatment of psychiatric disorders, such as schizophrenia.