local anesthesia
Medical term for numbing a specific area of the body, as opposed to general anesthesia.
Local anesthesia is often used in dental treatment.
全身麻酔 is general anesthesia, affecting the whole body and consciousness, while 部分麻酔 is local anesthesia for a specific area.
Compound of 部分 (ぶぶん, 'part') and 麻酔 (ますい, 'anesthesia').