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Noun: commissure  'kó-mi,shûr
  1. A bundle of nerve fibers passing from one side to the other of the brain or spinal cord
     
  2. The point of union between two parts, as the angles of the lips or eyelids, the mandibles of a bird, etc

Derived forms: commissures

Type of: nerve pathway, nerve tract, pathway, tract

Encyclopedia: Commissure