- a line where two parts join or unite; joint; seam
- Anat. the area where symmetrical parts join, as of the lips or of the brain's hemispheres
Origin of commissureMiddle English and amp; Old French ; from Classical Latin commissura ; from commissus, past participle of committere: see commit
- A line or place at which two things are joined.
- Anatomy a. A tract of nerve fibers passing from one side to the other of the spinal cord or brain.b. The point or surface where two parts, such as the eyelids, lips, or cardiac valves, join or form a connection.
- Botany The surface or place along which two structures, such as carpels, are joined.
Origin of commissureMiddle English, from Latin commiss&umacron;ra, from commissus, past participle of committere, to join; see commit.