arbovirusPronunciation: /ˈɑːbə(ʊ)ˌvʌɪrəs/Definition of arbovirus noun Medicine any of a group of viruses which are transmitted by mosquitoes, ticks, or other arthropods. They include the virus of yellow fever. Origin: 1950s: from ar(thropod)-bo(rne) + virusarbovirus in other Oxford dictionaries Definition of arbovirus in the US English dictionary