Wiktionary
rubulavirus
n. Any member of the genus (taxlink Rubulavirus genus) of infectious viruses, including the mumps virus and parainfluenza types 2, 4a and 4b.
Wikipedia
Rubulavirus
Rubulavirus is a genus of viruses in the family Paramyxoviridae, order Mononegavirales. Humans, apes, pigs, and dogs serve as natural hosts. There are currently seven species in this genus. Diseases associated with this genus include: mumps.