Medical Dictionary
decussation
noun de·cus·sa·tion \ˌdē-(ˌ)kə-ˈsā-shən\
Medical Definition of DECUSSATION
1
: the action of intersecting or crossing (as of nerve fibers) especially in the form of an X—see decussation of pyramids
2
a : a band of nerve fibers that connects unlike centers on opposite sides of the nervous system b : a crossed tract of nerve fibers passing between centers on opposite sides of the central nervous system : commissure
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