a type of small crown saw used in surgery to remove a circular section, as of bone from the skull
Origin of trephineearlier trafine, form based on trepan from Classical Latin tres, three + fines, ends
transitive verb-·phined′, -·phin′ing
to operate on with a trephine
A surgical instrument with a cylindrical saw usually used for removing a disk of bone, especially from the skull, or for removing corneal tissue.
transitive verbtre·phined, tre·phin·ing, tre·phines
To operate on with a trephine.
Origin of trephineFrench tréphine from obsolete English trefine from Latin trēs fīnēs three ends trēs three ; see trei- in Indo-European roots. fīnēs pl. of fīnis end
(third-person singular simple present trephines, present participle trephining, simple past and past participle trephined)
- To use a trephine during surgery.