[ˌanɪsˈθiːzɪə](美 anesthesia)
noun
[mass noun]insensitivity to pain, especially as artificially induced by the administration of gases or the injection of drugs before surgical operations
（尤指手术前用气体或注射药剂造成的）感觉缺失，麻醉状态
■the induction of this state
施行麻醉
■the branch of medicine concerned with the induction of this state
麻醉学