Com*mis"sure (? ∨ ?; 134-6), n. [L. commissura a joing together: cf. F. commissure. See Commit.]
1.
A joint, seam, or closure; the place where two bodies, or parts of a body, meet and unite; an interstice, cleft, or juncture.
2. Anat. & Zool. (a)
The point of union between two parts, as the angles of the lips or eyelids, the mandibles of a bird, etc.
(b)
A collection of fibers connecting parts of the brain or spinal marrow; a chiasma.
3. Bot.
The line of junction or cohering face of two carpels, as in the parsnip, caraway, etc.
© Webster 1913.