COMMISSURE

commissure. Commissure, n. a joint, seam, future, pore

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Com‐mis″sure (? or ?; 134–6), n. [[L. commissura a joining together: cf. F. commissure. See Commit.]] 1. 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. 2. (Anat. & Zoöl.) (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. 3. (Bot.) The line of junction or cohering face of two carpels, as in the parsnip, caraway, etc.