/ Thesaurus / C Synonyms of chiasm Find synonyms for: Noun1. chiasma, chiasm, decussation, structure, anatomical structure, complex body part, bodily structure, body structureusage: an intersection or crossing of two tracts in the form of the letter XWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: effervescent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language