mesiolingual

[ mē′zē-ō-lĭnggwəl ]

adj.

Of or relating to the mesial and the lingual surfaces of a tooth, especially the angle formed by their junction.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.