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optic chiasmata

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optic chiasma

–noun
a site at the base of the forebrain where the inner half of the fibers of the left and right optic nerves cross to the opposite side of the brain.
Also, optic chiasm.


Origin:
1870–75
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Medical Dictionary

Main Entry: optic chiasma
Function: noun
: the X-shaped partial decussation on the undersurface of the hypothalamus through which the optic nerves are continuous with thebrain called also optic chiasm
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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