commissure commissural • commissurotomy · · · Info · Definitions · Characters · · commissure · · Text Latin · · Script 10 · · Length Definitions · · · (noun) a bundle of nerve fibers passing from one side to the other of the brain or spinal cord. · · Noun Definition 1 Characters · · c latin small letter c U+0063 e latin small letter e U+0065 i latin small letter i U+0069 m latin small letter m U+006D o latin small letter o U+006F r latin small letter r U+0072 s latin small letter s U+0073 u latin small letter u U+0075