mesial adjective. ['mi:zɪǝl, 'mɛsɪǝl] E19.
[Irreg. from Greek mesos middle + -IAL.]
Chiefly Anatomy. Pertaining to, situated in, or directed towards the middle line of a body; median. Also, situated mesially with respect to.

■ mesially adverb in a mesial position or direction M19.

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