commissure
UK /ˈkɒm.ɪs.jʊə/ · US /ˈkɑm.əˌʃʊɹ/ noun
Forms commissures
- noun (anatomy) The joint between two bones.
- noun (neuroanatomy) A band of nerve tissue connecting the hemispheres of the brain, the two sides of the spinal cord, etc.
- noun (anatomy) The line where the upper and lower lips or eyelids meet.
Etymology
From Latin commissura (“a joining or connecting together”), from commissus (passive perfect participle of committo (“to join, to connect”)) + -ura.
Webster’s 1913
- noun A joint, seam, or closure; the place where two bodies, or parts of a body, meet and unite; an interstice, cleft, or juncture.
- noun (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.
Etymology [L. commissura a joing together: cf. F. commissure. See Commit.]
Sources: Wiktionary · Webster’s 1913 — from the Wiktionary entry “commissure”, CC BY-SA 4.0. Details