Definitions for optic chiasma
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Random House Webster's College Dictionary
op′tic chias′ma(n.)
(or chi′asm )
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.
Category: Anatomy
Origin of optic chiasma:
1870–75
Princeton's WordNet
optic chiasma, optic chiasm, chiasma opticum(noun)
the crossing of the optic nerves from the two eyes at the base of the brain
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"optic chiasma." Definitions.net. STANDS4 LLC, 2013. Web. 22 May 2013. <http://www.definitions.net/definition/optic chiasma>.