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Trigonid

   Also found in: Medical 0.01 sec.
Tri´go`nid
4.(Zool.) The cutting region of the crown of an upper molar, usually the anterior part. That of a lower molar is the Tri"go*nid ( ).


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The trigonid is formed by subequal protoconid and metaconid with the protoconid slightly mesiad of the metaconid.
 
 
 
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