/ Thesaurus / L Synonyms of leptomeninges Find synonyms for: Noun1. leptomeninges, meninx, meningesusage: the two innermost layers of the meninges; cerebrospinal fluid circulates between these innermost layersWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: imprudent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language