/ Thesaurus / E Synonyms of euglenid Find synonyms for: Noun1. euglenoid, euglenophyte, euglenid, alga, algaeusage: marine and freshwater green or colorless flagellate organismWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: nefarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language