/ Dictionary / Index A arbovirus: Meaning and Definition of Find definitions for: ar•bo•vi•rus Pronunciation: (är'bu-vī"rus), [key] — pl. -rus•es. any of several groups of RNA-containing viruses that are transmitted by bloodsucking arthropods, as ticks, fleas, or mosquitoes, and may cause encephalitis, yellow fever, or dengue fever. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: arbovirus (Thesaurus) arbour arbtrn. Related Content Daily Word Quiz: simian Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language