/ Dictionary / Index C commissure: Meaning and Definition of Find definitions for: com•mis•sure Pronunciation: (kom'u-shoor", -shûr"), [key] — n. a joint; seam; suture. the joint or face by which one carpel coheres with another. a connecting band of nerve fiber, esp. one joining the right and left sides of the brain or spinal cord. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: commissure (Thesaurus) commission plan commissurotomy Related Content Daily Word Quiz: eccentric Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language