Medical Definition of Reoviridae
: a family of double-stranded RNA viruses that have a virion with icosahedral structural symmetry but may appear spherical, that have a capsid with one to three concentric protein layers, and that comprise many pathogens of plants and animals including the causative agents of bluetongue and Colorado tick fever—see orbivirus, rotavirus
Seen and Heard
What made you want to look up Reoviridae? Please tell us where you read or heard it (including the quote, if possible).