commissure

From Latin commissura (“a joining or connecting together”), from commissus (passive perfect participle of committo (“I join, I connect”)) +‎ -ura.

• (Received Pronunciation) IPA^(key): /ˈkɒm.ɪs.jʊə/
• (General American) IPA^(key): /ˈkɑm.əˌʃʊɹ/

commissure (plural commissures)

1. (anatomy) The joint between two bones.
   • 1734, William Stukeley, Of the Gout, J. Roberts, page 14:

     ...that round about the commissure of all our joints...

2. (neuroanatomy) A band of nerve tissue connecting the hemispheres of the brain, the two sides of the spinal cord, etc.
3. (anatomy) The line where the upper and lower lips or eyelids meet.

• “commissure”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.
• “commissure”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.

commissure f (plural commissures)

1. commissure

• “commissure”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.

commissure f

1. plural of commissura

commissūre

1. vocative masculine singular of commissūrus