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.

Origin of optic chiasma

First recorded in 1870–75

Medical definitions for optic chiasm

optic chiasm

n.

A flattened quadrangular body that is the point of crossing of the fibers of the optic nerves. optic decussation