commissure

[ kom-uh-shoor, -shur ]

Phonetic (Standard)IPA

noun

a joint; seam; suture.
Botany. the joint or face by which one carpel coheres with another.
Anatomy, Zoology. a connecting band of nerve fiber, especially one joining the right and left sides of the brain or spinal cord.

commissure

/ ˈkɒmɪˌsjʊə; kəˈmɪsjʊrəl; ˌkɒmɪˈsjʊərəl /

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
any of various joints between parts, as between the carpels, leaf lobes, etc, of a plant

com·mis·su·ral [k, uh, -, mish, -er-, uh, l, kom-, uh, -, shoor, -, uh, l, -, shur, -], adjective
inter·com·missur·al adjective
pseudo·com·missu·ral adjective

1375–1425; late Middle English (< Middle French ) < Latin commissūra, equivalent to commiss ( us ) ( commissary ) + -ūra -ure

C15: from Latin commissūra a joining together, from committere commit

Owing to the presence of the commissure connecting the posterior roots, some part of a nerve is present in every section.

The lower commissure continued as the intestinal nerve is shewn in Pl.

The dorsal commissure is represented in longitudinal section in Pl.

I have not been able to prove that the commissure is continued forwards into the auditory nerve.

Very possibly they originate as a single commissure which becomes longitudinally segmented.

April 18, 2024petrichor

[pet-ri-kawr]

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