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



BrE BrE//ˌænəlˈdʒiːziə//
; NAmE NAmE//ˌænəlˈdʒiːʒə//
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the loss of the ability to feel pain while still conscious Word Origin early 18th cent.: from Greek analgēsia ‘ painlessness’, from an- ‘not’ + algein ‘feel pain’.
See the Oxford Advanced American Dictionary entry: analgesia