English dictionary

chiasm

/'k/aI//&/z/@/m/

Definitions, examples, synonyms and antonyms from WordNet 3.0.

noun

an intersection or crossing of two tracts in the form of the letter X

noun.body

Synonyms chiasma decussation

Source: WordNet 3.0
A commissure; especially, the optic commissure, or crucial union of the optic nerves.

noun

Source: webster1913