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optic chiasma
or optic chiasm
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.
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51Թ History and Origins
Origin of optic chiasma1
First recorded in 1870–75
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Example Sentences
Examples have not been reviewed.
Pressure on the optic chiasma, for example by a tumour of the pituitary body, is associated with bilateral temporal hemianopsia.
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