The use of drugs to block pain sensation (anesthesia); the state produced or the drugs used, especially in medical contexts.
手術を受ける前に全身麻酔が行われた。
General anesthesia was administered before the surgery.
歯科で麻酔をかけてもらったので痛みはほとんどなかった。
I received anesthesia at the dentist, so there was little pain.
麻酔が切れると痛みを感じることがあるから、薬を用意しておく。
When the anesthesia wears off you may feel pain, so prepare medication.