phenothiazine

noun

phe·​no·​thi·​a·​zine ˌfē-nō-ˈthī-ə-ˌzēn 

1

: a greenish-yellow crystalline compound C₁₂H₉NS used as an anthelmintic and insecticide especially in veterinary practice

2

: any of various phenothiazine derivatives (such as chlorpromazine) that are used as tranquilizing agents especially in the treatment of schizophrenia

Examples of phenothiazine in a Sentence

Recent Examples on the Web

Chemically, it is classified as a phenothiazine derivative. —Kristan Hawkins, Newsweek, 6 Feb. 2025

It's also not recommended for use with the phenothiazine class of antipsychotics, which are used in the treatment of schizophrenia. —Jes Skolnik, Allure, 23 Sep. 2021

Word History

Etymology

International Scientific Vocabulary

First Known Use

1894, in the meaning defined at sense 1

Rhymes for phenothiazine

• antisubmarine
• catecholamine
• dichlorobenzene
• dimethylamine
• diphenylamine
• ethanolamine
• hydroxylamine
• isobutylene
• mercaptopurine
• nucleoprotein
• penicillamine
• phenylalanine

Medical Definition

phenothiazine

noun

phe·​no·​thi·​azine ˌfē-nō-ˈthī-ə-ˌzēn 

1

: a greenish yellow crystalline compound C₁₂H₉NS used as an anthelmintic and insecticide especially in veterinary practice

called also thiodiphenylamine

2

: any of various phenothiazine derivatives (as chlorpromazine) that are used as tranquilizing agents especially in the treatment of schizophrenia