What is the meaning of Trepanning?

(p.pr.&vb.n.) of Trepan.
Webster's Revised Unabridged Dictionary
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APAWebster's. (2011). trepanning. Retrieved September 20, 2026, from http://smartdefine.org/trepanning/definitions/2074409
ChicagoWebster's. 2011. "trepanning" http://smartdefine.org/trepanning/definitions/2074409 (accessed September 20, 2026).
HarvardWebster's 2011, trepanning, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/trepanning/definitions/2074409>.
MLAWebster's. "trepanning" 28 May 2011. Web. 20 September 2026. <http://smartdefine.org/trepanning/definitions/2074409>