ar·bo·vi·rus 
(ärbə-vī′rəs)
(ärbə-vī′rəs)n.
Any of a large group of RNA viruses that are transmitted by arthropods, such as mosquitoes and ticks, and include the causative agents of encephalitis, yellow fever, and dengue.
[ar(thropod-)bo(rne) virus.]
arbo·vi′ral adj.
ar′bo·vi·rolo·gy (är′bō-vĭ-rŏlə-jē) n.