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A surgical instrument with a cylindrical saw usually used for removing a disk of bone, especially from the skull, or for removing corneal tissue.
tr.v. tre·phined, tre·phin·ing, tre·phines
To operate on with a trephine.
[French tréphine, from obsolete English trefine, from Latin trēs fīnēs, three ends : trēs, three; see trei- in Indo-European roots + fīnēs, pl. of fīnis, end.]
treph′i·na′tion (trĕf′ə-nā′shən) n.
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|Noun||1.||trephination - an operation that removes a circular section of bone from the skull|
surgical operation, surgical procedure, surgical process, surgery, operation - a medical procedure involving an incision with instruments; performed to repair damage or arrest disease in a living body; "they will schedule the operation as soon as an operating room is available"; "he died while undergoing surgery"
n. trefinación, acto de cortar un tejido o un hueso con un corte circular o de disco, operación gen. efectuada en el cráneo.