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

Learn More About commissure

Time Traveler for commissure

Time Traveler

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

See more words from the same century

Dictionary Entries Near commissure

commissive

commissure

commit

See More Nearby Entries 

Statistics for commissure

Cite this Entry

“Commissure.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/commissure. Accessed 17 Aug. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

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

WORD OF THE DAY

Test Your Vocabulary

Odd Habits and Quirks

  • image1926873504
  • Which of the following best describes an easily irritated person?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!