/ Dictionary / Index B bacteri-: Meaning and Definition of Find definitions for: bacteri- Pronunciation: [key] a combining form meaning “bacteria,” used in the formation of compound words: bactericide; bacteriuria. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. bacteremia bacteria Related Content Daily Word Quiz: deleterious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language