trephination


treph·i·na·tion

noun \ˌtre-fə-ˈnā-shən\

Definition of TREPHINATION

:  an act or instance of perforating the skull with a surgical instrument

First Known Use of TREPHINATION

1874

treph·i·na·tion

noun \ˌtref-ə-ˈnā-shən\   (Medical Dictionary)

Medical Definition of TREPHINATION

: an act or instance of using a trephine (as to perforate the skull)

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