Definition of "phenothiazine" []

• A yellow organic compound, C12H9NS, used in insecticides, livestock anthelmintics, and dyes. (noun)
• Any of a group of drugs derived from this compound and used in the treatment of psychiatric disorders, such as schizophrenia. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The company had figured out how to extract the nucleus of methylene blue—which it called phenothiazine—in order to make new drugs."
• "Lack of gastrointestinal symptoms in the first 24 hours post-ingestion may have resulted from co-ingestion of a phenothiazine and benztropine."
• "The drug that helped Madame X keep her head while doctors chiseled away at her nose was a phenothiazine."