/ Thesaurus / P Synonyms of probiotic bacterium Find synonyms for: Noun1. probiotic, probiotic bacterium, probiotic microflora, probiotic flora, bacteria, bacteriumusage: a beneficial bacterium found in the intestinal tract of healthy mammals; often considered to be a plantWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: entomology Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language