phe·no·thi·a·zine

[fee-nuh-thahy-uh-zeen, -zin]
noun
1.
Chemistry. a grayish-green to greenish-yellow, crystalline, water-insoluble solid, C 1 2 H 9 NS, used chiefly as an insecticide and vermifuge, and in the synthesis of pharmaceuticals.
2.
Pharmacology. any of a class of medications used principally to treat psychotic symptoms, as delusions or hallucinations, and excessive excitability.
Origin:
1890–95; pheno- + thiazine

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Based on the Random House Dictionary, © Random House, Inc. 2013.
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Collins
World English Dictionary
phenothiazine (ˌfiːnəʊˈθaɪəziːn) [Click for IPA pronunciation guide]
 
—n
1.  a colourless to light yellow insoluble crystalline compound used as an anthelmintic for livestock and in insecticides. Formula: C12H9NS
2.  any of several drugs derived from phenothiazine and used as strong tranquillizers and in the treatment of schizophrenia

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Phenothiazine is always a great word to know.
So is melamine. Does it mean:
a white, crystalline, slightly water-soluble solid, C3N3(NH2)3, used chiefly in organic synthesis and in the manufacture of resins
a solution containing the maximum amount of solute capable of being dissolved under given conditions
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American Heritage
Medical Dictionary

phenothiazine phe·no·thi·a·zine (fē'nō-thī'ə-zēn', -nə-)
n.

  1. A yellow organic compound used in veterinary anthelmintics. Also called thiodiphenylamine.

  2. Any of a group of drugs derived from this compound and used as tranquilizers in the treatment of psychiatric disorders, such as schizophrenia.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
phenothiazine   (fē'nō-thī'ə-zēn')  Pronunciation Key 

  1. 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.

  2. 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.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Britannica
Encyclopedia

phenothiazine

widely used anthelmintic (worming agent) in veterinary medicine. Phenothiazine is an organic compound effective against a broad range of parasites in cattle, horses, poultry, sheep, and swine. A highly toxic drug, it is not recommended for human use and is not effective in dogs or cats

Learn more about phenothiazine with a free trial on Britannica.com.

Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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