Definition of anaesthesia noun from the Oxford Advanced Learner's Dictionary



    BrE BrE//ˌænəsˈθiːziə//
    ; NAmE NAmE//ˌænəsˈθiːziə//
    (especially US English anesthesia
    BrE BrE//ˌænəsˈθiːʒə//
    ; NAmE NAmE//ˌænəsˈθiːʒə//
    [uncountable] Operations
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  1. 1the use of anaesthetics during medical operations surgery carried out under anaesthesia See related entries: Operations
  2. 2(specialist) the state of being unable to feel anything, especially pain
  3. Word Originearly 18th cent.: modern Latin, from Greek anaisthēsia, from an- ‘without’ + aisthēsis ‘sensation’.