adjective.
pertaining to the middle line of the body
adjective.
Facing the side of a tooth which faces the middle of the jaw.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adjective.
being in or directed toward the midline or mesial plane of the body
Word Usage
"Seven molars were also virtually sectioned through the mesial cusps and two-dimensional enamel thickness and dentine horn height measurements were recorded."