noun
A formal medical term for a surgical procedure. Often used in clinical or academic contexts.
この病気は外科的手術が必要です。
This disease requires a surgical operation.
外科的手術のリスクについて説明を受けた。
I received an explanation about the risks of the surgical procedure.
Compound of 外科的 (surgical) + 手術 (operation). The exact historical derivation is uncertain, but the term follows standard medical terminology patterns.