/ree'oh vuy"reuhs, ree"oh vuy'-/ , n. , pl. reoviruses .
any large virus of the family Reoviridae, having double-stranded RNA and a polyhedral capsid, including those causing infantile gastroenteritis.
[ 1955-60; r ( espiratory ) e ( nteric ) o ( rphan ) virus; coined by U.S. virologist Albert B. Sabin (b. 1906) ]