trepan

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trephine

 [trĕ-f€īn´, trĕ-fēn´]
1. a saw for removing a disk of bone, chiefly from the skull.
Trephine. From Dorland's, 2000.
2. an instrument for removing a circular area of cornea.
3. to remove with this instrument.

trepan

(trĭ-păn′)
n.
1. A rock-boring tool used in mining for sinking shafts.
2. Medicine A trephine.
tr.v. tre·panned, tre·panning, tre·pans
1. To bore (a shaft) with a trepan.
2. To bore or otherwise make a hole in (the skull), as in certain prehistoric cultures or in surgery using a trephine.

trep′a·na′tion (trĕp′ə-nā′shən) n.

trepan

See trephine.

tre·phine

, trepan (trē-fīn', trĕ-pan')
1. A cylindric or crown saw used for the removal of a disc of bone, especially from the skull, or of other firm tissue as that of the cornea.
2. To remove a disc of bone or other tissue by means of a trephine.
[contrived fr. L. tres fines, three ends]

tre·phine

, trepan (trē-fīn', trĕ-pan')
1. A cylindric or crown saw used for the removal of a disc of bone, especially from the skull, or of other firm tissue.
2. To remove a disc of bone or other tissue by means of a trephine.
[contrived fr. L. tres fines, three ends]

trepan

trephine.
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References in periodicals archive ?
In the 45th minute it was 6-2 as the Hawks gave Chris Sykes all the time in the world to pick his spot in the roof of the net, then in the 48th minute Elder fired straight through Trapans to see off the Blackburn keeper, Stuart Ashton taking over for the remainder of the game.
Stars Stats: Michael Elder 3+2; Michael Bowman 2+0; Arturs Ozols 1+3; Callum Davies 1+3; Chris Sykes 1+2; Deniss Bakatovs 1+1; James Moss 0+1; James Hellens 0+1; Jack Emerson 0+1; Matthew Campbell 0+1; Darren Stattersfield 0+1 SOG: James Flavell 47 (16 / 15 / 16) Hawks Stats: Aaron Davies 1+0; Lewis Baldwin 1+0; Jozef Itocy 1+0; Matt Viney 0+2; Ric Bentham 0+1; Steve Duncombe 0+1; Bobby Streetly 0+1; Lee Pollitt 0+1 SOG: Niks Trapans 36 (17 / 12 / 7); Stuart Ashton 8 Man-of-the-Match for the Stars was Michael Elder.
Gradually Billingham recovered their composure, Sykes giving them breathing space once more in the 52nd minute when he broke down the left wing from a face off in the defensive zone and skated in front of Trapans before sliding the puck past him.
On Saturday, Ultimate Windowssponsored Billingham were gifted the perfect start when Hawks' Bobby Caunce was stripped of the puck in front of his own net by James Moss, who fired past debutant netminder Niks Trapans on his blocker side with only 76 seconds played.