I. a ‧ naes ‧ the ‧ tize BrE AmE ( also anaesthetise British English , anesthetize American English ) /əˈniːsθətaɪz, əˈniːsθɪtaɪz $ əˈnes-/ verb [transitive]
to give someone an anaesthetic so that they do not feel pain
II. a ‧ nes ‧ the ‧ tize /əˈniːsθətaɪz, əˈniːsθɪtaɪz $ əˈnes-/ BrE AmE verb [transitive]
the usual American spelling of ↑ anaesthetize