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Main Entry: 1tre·pan
Pronunciation: tri-'pan
Function: transitive verb
Inflected Form(s): tre·panned; tre·pan·ning
Etymology: Middle English, from trepane trephine
1 : to use a trephine on (the skull)
2 : to remove a disk or cylindrical core (as from metal for testing)
- trep·a·na·tion /"tre-p&-'nA-sh&n/ noun
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Dictionary.com Unabridged (v 1.1) - Cite This Source
tre·pan1 /trɪˈpæn/ Pronunciation Key - Show Spelled Pronunciation[tri-pan] Pronunciation Key - Show IPA Pronunciation noun, verb, -panned, -pan·ning.
–noun 1. a tool for cutting shallow holes by removing a core.
2. Surgery. an obsolete form of the trephine resembling a carpenter's bit and brace.
–verb (used with object) 3. Machinery. to cut circular disks from (plate stock) using a rotating cutter.
4. Surgery. to operate upon with a trepan; trephine.