[ an-tee-sahy-kot-ik, an-tahy- ]
/ ˌæn ti saɪˈkɒt ɪk, ˌæn taɪ- /


of or relating to any of various substances used in the treatment of psychosis, especially schizophrenia, and acute or severe states of mania, depression, or paranoia.


Also called major tranquilizer, neuroleptic. any such substance, as the phenothiazines.

Origin of antipsychotic

First recorded in 1950–55; anti- + psychotic Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for antipsychotic

  • If not checked with antipsychotic medication, they become violent.

  • The antipsychotic drugs, or neuroleptics, reduce the brain's sensitivity to one or more of these chemical substances.

British Dictionary definitions for antipsychotic


/ (ˌæntɪsaɪˈkɒtɪk) /


preventing or treating psychosis


any antipsychotic drug, such as chlorpromazine: used to treat such conditions as schizophrenia
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for antipsychotic


[ ăn′tē-sī-kŏtĭk, ăn′tī- ]


Counteracting or diminishing the symptoms of a psychotic disorder such as schizophrenia, paranoia, or bipolar disorder.

Related forms

an′ti•psy•chotic n.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.