IPA: //ˌsaɪ.kəʊˈsɜː.dʒər.i//
KK: /saɪˈkoʊˌsɜrʤəri/
A type of surgery on the brain that is used to treat serious mental or behavioral problems that do not respond to other treatments.
Psychosurgery was once a common treatment for severe mental illnesses, but it is now used much less frequently.
Psychosurgery is formed from "psycho-" (from Greek "psukhē", meaning soul or mind) and "surgery" (from Greek "cheirourgia", meaning hand work or manual operation). The term refers to surgical procedures that are intended to treat mental disorders by directly affecting the brain.
Think of 'psycho-' relating to the mind and 'surgery' as a manual operation — this helps you remember that psychosurgery involves surgical treatment for mental health issues.
No commonly confused words.