/ Thesaurus / L Synonyms of luminescent Find synonyms for: Adjective1. luminescent, light (vs. dark)usage: emitting light not caused by heatWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: tenacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language