/ Dictionary / Index A avian leukosis: Meaning and Definition of Find definitions for: a'vian leuko'sis Pronunciation: [key] — Vet. Pathol. Vet. Pathol. leukosis. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. avianize avian pneumoencephalitis Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language