/ Dictionary / Index B brucella: Meaning and Definition of Find definitions for: bru•cel•la Pronunciation: (br-sel'u), [key] — pl. -cel•lae -cel•las. any of several rod-shaped, aerobic bacteria of the genus Brucella, certain species of which, as B. melitensis, are pathogenic for humans and other animals. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: brucella (Thesaurus) Bruce brucellosis Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language