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WordReference Random House Unabridged Dictionary of American English © 2024phe•no•thi•a•zine (fē′nə thī′ə zēn′, -zin),USA pronunciation n. - Chemistrya grayish-green to greenish-yellow, crystalline, water-insoluble solid, C12H9NS, used chiefly as an insecticide and vermifuge, and in the synthesis of pharmaceuticals.
- Drugs[Pharm.]any of a class of medications used principally to treat psychotic symptoms, as delusions or hallucinations, and excessive excitability.
- pheno- + thiazine 1890–95
Collins Concise English Dictionary © HarperCollins Publishers:: phenothiazine /ˌfiːnəʊˈθaɪəziːn/ n - a colourless to light yellow insoluble crystalline compound used as an anthelmintic for livestock and in insecticides. Formula: C12H9NS
- any of several drugs derived from phenothiazine and used as strong tranquillizers and in the treatment of schizophrenia
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