- a small circular saw with a center pin mounted on a strong hollow metal shaft to which is attached a transverse handle: used in surgery to remove circular disks of bone from the skull.
- to operate upon with a trephine.
Origin of trephine
1620–30; spelling variant of trefine, orig. trafine, blend of trapan (variant of trepan1) and Latin phrase trēs fīnēs three ends (the inventor's explanation)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for trephine
And the use of the trephine, where the affected side can be distinguished.Zoonomia, Vol. II
He had been searching for two hours when he found the trephine.
A trephine is just like a corkscrew, only in place of the screw you have a cup of steel.
From Celsus too we learn that the trephine was driven by a thong.
The Latin term for the trephine, modiolus, has the same meaning.
- a surgical sawlike instrument for removing circular sections of bone, esp from the skull
- (tr) to remove a circular section of bone from (esp the skull)
Also called: trepan
C17: from French tréphine, from obsolete English trefine trepan 1, allegedly from Latin trēs fīnēs literally: three ends; influenced also by English trepane trepan 1
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
- A cylindrical or crown saw for the removal of a disk of bone, especially from the skull, or removal of other firm tissue such as that of the cornea.
- To operate on with a trephine.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.