noun Date: 1872 the X-shaped partial decussation on the undersurface of the hypothalamus through which the optic nerves are continuous with the brain
OPTIC CHIASMA
Meaning of OPTIC CHIASMA in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012