1. anatomical structures where two parts join or meet, especially nerve fibers connecting corresponding parts of the brain or spinal cord
Usage: medical; anatomy
2. the corners or angles where body parts meet, such as the corners of the mouth or eyelids
Usage: anatomy

Examples

• The anterior commissure connects the two hemispheres of the brain.
• Damage to the commissures can affect communication between brain regions.
• The surgeon carefully examined the commissures of the patient’s lips.
• Neural commissures allow information to pass between the left and right sides of the nervous system.
• The commissures of the eyelids showed signs of irritation.
• Medical students learn about various commissures in their anatomy classes.