- Relating to the mesial and lingual surfaces of a tooth; denoting especially the angle formed by their junction.
* * *me·sio·lin·gual·ly -ē adv
* * *me·sio·lin·gual (me″ze-o-lingґgwəl) pertaining to or formed by the mesial and lingual surfaces of a tooth, or the mesial and lingual walls of a tooth cavity preparation.
Medical dictionary. 2011.
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