commissure

Meanings

1. 1
   noun

   a bundle of nerve fibers passing from one side to the other of the brain or spinal cord

   The corpus callosum is the largest commissure connecting the cerebral hemispheres.

2. 2
   noun

   The line where the upper and lower lips or eyelids meet.

   The rash extended from the corner of the mouth along the labial commissure.

From Latin commissura (“a joining or connecting together”), from commissus (passive perfect participle of committo (“to join, to connect”)) + -ura.

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