noun(also optic chiasm) Anatomy
- The X-shaped structure formed at the point below the brain where the two optic nerves cross over each other.More example sentences
- Nerve trunks from the two eyes carry the signals from each eye to the optic chiasma, a crossing over point located a few centimeters back from the eyes.
More definitions of optic chiasmaDefinition of optic chiasma in:
- The British & World English dictionary