Home › Words › R › rubulavirusrubulavirusrubulavirus means any member of the genus Rubulavirus of infectious viruses, including the mumps virus and parainfluenza types 2, 4a and 4b.EtymologyFrom the genus name.nounAny member of the genus Rubulavirus of infectious viruses, including the mumps virus and parainfluenza types 2, 4a and 4bDefinitions & examples from Wiktionary (CC BY-SA 3.0).