anaesthesia
/ˌænɪsˈθiːzjə/( <美> anesthesia)
noun
mass noun
1- 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。
1.1
- the induction of this state施行麻醉。
1.2
- the branch of medicine concerned with the induction of this state麻醉学。
词源
early 18th cent.: modern Latin， from Greek anaisthēsia, from an- 'without' + aisthēsis 'sensation'.