commissure

noun
com·​mis·​sure | \ ˈkä-mə-ˌshu̇r How to pronounce commissure (audio) \

Definition of commissure

1 : a point or line of union or junction especially between two anatomical parts (such as adjacent heart valves)
2 : a connecting band of nerve tissue in the brain or spinal cord

Other Words from commissure

commissural \ ˌkä-​mə-​ˈshu̇r-​əl How to pronounce commissure (audio) \ adjective

First Known Use of commissure

15th century, in the meaning defined at sense 1

History and Etymology for commissure

Middle English, "suture, seam," borrowed from Middle French & Latin; Middle French, borrowed from Latin commissūra "joint, juncture, seam," from commissus (past participle of committere "to join together") + -ūra -ure — more at commit

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The first known use of commissure was in the 15th century

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Cite this Entry

“Commissure.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/commissure. Accessed 8 May. 2021.

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More Definitions for commissure

commissure

noun
com·​mis·​sure | \ ˈkäm-ə-ˌshu̇(ə)r How to pronounce commissure (audio) \

Medical Definition of commissure

1 : a point or line of union or junction between two anatomical parts (as the lips at their angles or adjacent heart valves)
2 : a connecting band of nerve tissue in the brain or spinal cord — see anterior commissure, corpus callosum, gray commissure, habenular commissure, hippocampal commissure, posterior commissure — compare massa intermedia

Other Words from commissure

commissural \ ˌkäm-​ə-​ˈshu̇r-​əl How to pronounce commissure (audio) \ adjective

More from Merriam-Webster on commissure

Britannica.com: Encyclopedia article about commissure

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