/ Dictionary / Index A actinobacillus: Meaning and Definition of Find definitions for: ac•tin•o•ba•cil•lus Pronunciation: (ak-tin"ō-bu-sil'us, ak"tu-nō-), [key] — pl. -cil•li any of several spherical or rod-shaped, aerobic, parasitic bacteria of the genus Actinobacillus, certain species of which, as A. mallei, are pathogenic for animals. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. actinobacillosis actinochemistry Related Content Daily Word Quiz: digression Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language