[ sahy-koh-sur-juh-ree ]
/ ˌsaɪ koʊˈsɜr dʒə ri /


treatment of mental disorders by means of brain surgery.


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Compare lobotomy.

Origin of psychosurgery

First recorded in 1935–40; psycho- + surgery

OTHER WORDS FROM psychosurgery

psy·cho·sur·geon [sahy-koh-sur-juh n] /ˌsaɪ koʊˈsɜr dʒən/, nounpsy·cho·sur·gi·cal [sahy-koh-sur-ji-kuh l] /ˌsaɪ koʊˈsɜr dʒɪ kəl/, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for psychosurgery

/ (ˌsaɪkəʊˈsɜːdʒərɪ) /


any surgical procedure on the brain, such as a frontal lobotomy, to relieve serious mental disorders

Derived forms of psychosurgery

psychosurgical (ˌsaɪkəʊˈsɜːdʒɪkəl), adjective
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

Medical definitions for psychosurgery

[ sī′kō-sûrjə-rē ]


Brain surgery used to treat severe, intractable mental or behavioral disorders.

Other words from psychosurgery

psy′cho•surgeon (-sûrjən) n.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.