noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   the surgical procedure in which a hole is drilled in the skull and a circular piece of bone removed
2. 2
   an operation that removes a circular section of bone from the skull wordnet

Synonyms

All synonyms

trepanationtrepanationtrepanningtrephining

Etymology

From trephine + -ation.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.