Paramyxoviridae

noun plural

Para·​myxo·​vi·​ri·​dae ˌpar-ə-ˌmik-sə-ˈvir-ə-ˌdē 

: a family of large single-stranded RNA viruses that have a helical nucleocapsid and lipid-containing envelope and that include the parainfluenza viruses and the causative agents of canine distemper, measles, mumps, Newcastle disease, and rinderpest

Note: Respiratory syncytial virus and metapneumovirus were formerly classified in this family but are now classified as pneumoviruses.

see morbillivirus, rubulavirus