analgesia
noun/ˌænəlˈdʒiːziə/
/ˌænəlˈdʒiːʒə/
[uncountable] (medical)- the loss of the ability to feel pain while still consciousWord Originearly 18th cent.: from Greek analgēsia ‘ painlessness’, from an- ‘not’ + algein ‘feel pain’.
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analgesia