commissure

play
noun com·mis·sure \ˈkä-mə-ˌshu̇r\

Definition of commissure

  1. 1 :  a point or line of union or junction especially between two anatomical parts (such as adjacent heart valves)

  2. 2 :  a connecting band of nerve tissue in the brain or spinal cord

commissural

play \ˌkä-mə-ˈshu̇r-əl\ adjective

Origin and Etymology of commissure

Middle English, from Middle French or Latin; Middle French, from Latin commissura a joining, from commissus, past participle


First Known Use: 15th century


Medical Dictionary

commissure

play
noun com·mis·sure \ˈkäm-ə-ˌshu̇(ə)r\

Medical Definition of commissure

  1. 1:  a point or line of union or junction between two anatomical parts (as the lips at their angles or adjacent heart valves)

  2. 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

commissural

\ˌkäm-ə-ˈshu̇r-əl\play adjective

Learn More about commissure


Seen and Heard

What made you want to look up commissure? Please tell us where you read or heard it (including the quote, if possible).

Love words? Need even more definitions?

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

WORD OF THE DAY

to give up a position of power

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

  • winning-words-from-the-national-spelling-bee-logo
  • Which is the correct spelling of the winning word from 1988?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Dictionary Devil

Test Your Knowledge - and learn some interesting things along the way.

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!