decussation

dec·us·sa·tion  (dk-sshn, dk-)

n.

1. A crossing in the shape of an X.

2. Anatomy An X-shaped crossing, especially of nerves or bands of nerve fibers, connecting corresponding parts on opposite sides of the brain or spinal cord.

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decussation

the state of being in the form of an X. See also joining.

See also: Form

Thesaurus

Noun

1.

decussation - an intersection or crossing of two tracts in the form of the letter X chiasm, chiasma anatomical structure, bodily structure, body structure, complex body part, structure - a particular complex anatomical part of a living thing; "he has good bone structure" chiasma opticum, optic chiasm, optic chiasma - the crossing of the optic nerves from the two eyes at the base of the brain