Meaning & use
decussation
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The crossing of two structures, especially nerve fiber tracts, in an X-shaped pattern, typically at the midline of the body.
See it in a sentence
The partial decussation of the optic nerves lets each side of the brain process input from both eyes.
Neurologists examined the brainstem for abnormalities near the pyramidal decussation.
A note on using this word
A specialized anatomical term used almost exclusively in neuroscience and medicine.
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