cal·i·ci·vi·rus 
(kăl′ĭ-sĭ-vīrəs)
(kăl′ĭ-sĭ-vīrəs)n. pl. cal·i·ci·vi·rus·es
Any of a group of single-stranded RNA viruses that cause acute gastroenteritis in humans and other diseases in certain animals.
[New Latin Calicivīrus, former genus name : Latin calix, calic-, cup, goblet (from the cup-shaped depressions on the surface of the viruses) + VIRUS.]