myxovirus
noun
myxo·vi·rus ˈmik-sə-ˌvī-rəs 
: any of a former family (Myxoviridae) of single-stranded RNA viruses that included the orthomyxoviruses and the paramyxoviruses
myxoviral
ˌmik-sə-ˈvī-rəl
adjective 
Word History
Etymology
borrowed from New Latin, from myxo- myxo- + virus virus; so named for their affinity for certain mucins
First Known Use
1954, in the meaning defined above
Medical Definition
myxovirus
noun
myxo·vi·rus ˈmik-sə-ˌvī-rəs
: any of the viruses now classified in the families Orthomyxoviridae and Paramyxoviridae that were formerly included in a now rejected family (Myxoviridae)