/ Thesaurus / P Synonyms of phototrophic bacteria Find synonyms for: Noun1. phototrophic bacteria, phototropic bacteria, eubacteria, eubacterium, true bacteriausage: green and purple bacteria; energy for growth is derived from sunlight; carbon is derived from carbon dioxide or organic carbonWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: rustic Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language