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commissure
(redirected from middle commissure)

   Also found in: Medical, Encyclopedia, Wikipedia 0.01 sec.
com·mis·sure  (km-shr)
n.
1. A line or place at which two things are joined.
2. 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.
3. Botany The surface or place along which two structures, such as carpels, are joined.

[Middle English, from Latin commissra, from commissus, past participle of committere, to join; see commit.]

commis·sural adj.

commissure [ˈkɒmɪˌsjʊə]
n
1. (Life Sciences & Allied Applications / Biology) a band of tissue linking two parts or organs, such as the nervous tissue connecting the right and left sides of the brain in vertebrates
2. (Life Sciences & Allied Applications / Biology) any of various joints between parts, as between the carpels, leaf lobes, etc., of a plant
[from Latin commissūra a joining together, from committere commit]
commissural  [kəˈmɪsjʊrəl ˌkɒmɪˈsjʊərəl] adj
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.commissure - a bundle of nerve fibers passing from one side to the other of the brain or spinal cord
nerve pathway, nerve tract, pathway, tract - a bundle of myelinated nerve fibers following a path through the brain
corpus callosum - a broad transverse nerve tract connecting the two cerebral hemispheres


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