IPA: /ˌriːəˈpəreɪʃən/
KK: /riːˈɒpəreɪʃən/
A second or later surgical procedure performed on a patient after an initial operation.
The doctor explained that a reoperation might be necessary if the first surgery did not fully resolve the issue.
Reoperation → It is formed from "re-" (meaning again) and "operatio" (from Latin, meaning work or operation). The word "reoperation" means to perform an operation again.
Think of doing an 'operation' ('operatio') 'again' ('re-') — that's why reoperation means to perform an operation again.