noun

1. a partial or total loss of the sense of pain, temperature, touch, etc., produced by disease
2. ☆ a loss of sensation induced by an anesthetic, hypnosis, or acupuncture and limited to a specific area (local anesthesia) or involving a loss of consciousness (general anesthesia)

Etymology: ModL < Gr anaisthēsia < an-, without + aisthēsis, feeling < aisthanesthai: see aesthetic