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[klawr-prom-uh-zeen, klohr-] /klɔrˈprɒm əˌzin, kloʊr-/
a grayish-white, crystalline powder, C 17 H 19 ClN 2 S, derived from phenothiazine, used chiefly to inhibit nausea and vomiting and as a major tranquilizer in the management of schizophrenia and related psychoses.
1950-55; chlor-2 + pro(pyl) + (a)m(ine) + azine Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for chlorpromazine
  • The use of chlorpromazine as a treatment for schizophrenia soon followed.
British Dictionary definitions for chlorpromazine


a drug derived from phenothiazine, used as a tranquillizer and sedative, esp in psychotic disorders. Formula: C17H19ClN2S
Word Origin
C20: from chloro- + pro(pyl + a)m(ine) + azine
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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chlorpromazine in Medicine

chlorpromazine chlor·prom·a·zine (klôr-prŏm'ə-zēn', -prō'mə-)
A phenothiazine antipsychotic agent with antiemetic, antiadrenergic, and anticholinergic actions.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Encyclopedia Article for chlorpromazine

potent synthetic tranquilizing drug that acts selectively upon the higher centres in the brain as a depressant of the central nervous system. It is used in the treatment of persons with psychotic disorders. Chlorpromazine was first synthesized in 1950 and became generally available for medical use in the mid-1950s. One of the first tranquilizers introduced into medicine-along with the rauwolfia alkaloid, reserpine-chlorpromazine soon displaced reserpine in psychiatric practice.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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