/ Thesaurus / C Synonyms of chorionic Find synonyms for: Adjective1. chorionicusage: of or relating to a chorion; "a chorionic villus is a minute vascular projection on the fetal chorion"WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: fresco Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language