psy·​cho·​sur·​gery ˌsī-kō-ˈsər-jə-rē How to pronounce psychosurgery (audio)
: cerebral surgery employed in treating psychic symptoms
psychosurgeon noun
psychosurgical adjective

Example Sentences

Recent Examples on the Web In other words, H.M. was an epileptic who underwent experimental psychosurgery with no clear medical rationale. Neuroskeptic, Discover Magazine, 2 July 2016 The fascination with psychedelic drugs, psychosurgery, brain-stimulation devices, intravenous infusions, etc., is symptomatic of the current mental health crisis. New York Times, 31 May 2018 Although Moniz would share the 1949 Nobel Prize in medicine for his pioneering work in psychosurgery, the lobotomy had not only fallen out of favor by the 1950s but was being excoriated as a barbaric practice. Tony Long, WIRED, 12 Nov. 2010

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'psychosurgery.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History

First Known Use

1936, in the meaning defined above

Time Traveler
The first known use of psychosurgery was in 1936

Dictionary Entries Near psychosurgery

Cite this Entry

“Psychosurgery.” Dictionary, Merriam-Webster, Accessed 25 Mar. 2023.

Medical Definition


psy·​cho·​sur·​gery -ˈsərj-(ə-)rē How to pronounce psychosurgery (audio)
plural psychosurgeries
: cerebral surgery employed in treating psychic symptoms
psychosurgical adjective

More from Merriam-Webster on psychosurgery

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Challenging Standardized Test Words, Vol. 2

  • a pencil broken in half on top of a test answer sheet
  • The business’s new computer system proved not to be a panacea.
Name That Thing

You know what it looks like… but what is it called?

Solve today's spelling word game by finding as many words as you can with using just 7 letters. Longer words score more points.

Can you make 12 words with 7 letters?