optic chiasma, optic chiasm, chiasma opticum(noun)
the crossing of the optic nerves from the two eyes at the base of the brain
The part of the brain where the optic nerves partially cross.
The optic chiasm or optic chiasma is the part of the brain where the optic nerves partially cross. The optic chiasm is located at the bottom of the brain immediately below the hypothalamus.
U.S. National Library of Medicine
The X-shaped structure formed by the meeting of the two optic nerves. At the optic chiasm the fibers from the medial part of each retina cross to project to the other side of the brain while the lateral retinal fibers continue on the same side. As a result each half of the brain receives information about the contralateral visual field from both eyes.
The numerical value of optic chiasm in Chaldean Numerology is: 4
The numerical value of optic chiasm in Pythagorean Numerology is: 8
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"optic chiasm." Definitions.net. STANDS4 LLC, 2017. Web. 26 Mar. 2017. <http://www.definitions.net/definition/optic chiasm>.