Chiasm

n.

1.

(Anat.) A commissure; an intersection or crossing of two tracts; especially, the optic commissure, or crucial union of the optic nerves.

Noun

1.

chiasm - an intersection or crossing of two tracts in the form of the letter X Synonyms: chiasma, decussation

anatomical structure, bodily structure, body structure, chiasma, chiasma opticum, complex body part, decussation, optic chiasm, optic chiasma, structure