/ Dictionary / Index Z zoonosis: Meaning and Definition of Find definitions for: zo•on•o•sis Pronunciation: (zō-on'u-sis, zō"u-nō'sis), [key] — pl. -ses any disease of animals communicable to humans. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: zoonosis (Thesaurus) zoon zooparasite Related Content Daily Word Quiz: tactful Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language