/ Thesaurus / B Synonyms of bacteria bed Find synonyms for: Noun1. bacteria bed, filterusage: layer of sand or gravel used to expose sewage effluent to air and the action of microorganismsWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: devout Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language