from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Of, in, near, or toward the middle.
- adj. Dentistry Situated toward the middle of the front of the jaw along the curve of the dental arch.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. pertaining to the middle line of the body
- adj. Facing the side of a tooth which faces the middle of the jaw.
from the GNU version of the Collaborative International Dictionary of English
- adj. Middle; median; in, or in the region of, the mesial plane; internal; -- opposed to
from The Century Dictionary and Cyclopedia
- Pertaining to the middle; being in the middle; in zoology, pertaining to or on the middle line or plane of the body; median. Also mesian
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. being in or directed toward the midline or mesial plane of the body
Irregular derivation from Greek μέσος. (Wiktionary)