mesiobuccal

[mē′zē-ō-bŭkəl]
adj.
  1. Of or relating to the mesial and the buccal surfaces of a tooth, especially the angle formed by the junction of these two surfaces.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.