noun
: a narrow transverse groove that lies near the front of the superior surface of the body of the sphenoid bone, is continuous with the optic foramen, and houses the optic chiasma
noun
: a narrow transverse groove that lies near the front of the superior surface of the body of the sphenoid bone, is continuous with the optic foramen, and houses the optic chiasma
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012