/ Dictionary / Index B bacteriostat: Meaning and Definition of Find definitions for: bac•te•ri•o•stat Pronunciation: (bak-tēr'ē-u-stat"), [key] — n. a substance or preparation that inhibits the further growth of bacteria. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: bacteriostat (Thesaurus) bacteriostasis bacterium Related Content Daily Word Quiz: mamba Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language