Main Entry: cy·to·meg·a·lo·vi·rus

Pronunciation: \ˌsī-tə-ˌme-gə-lō-ˈvī-rəs\

Function: noun

Etymology: New Latin, from cytomegalia + -o- + virus

Date: 1963

: a herpesvirus (species Human herpesvirus 5 of the genus Cytomegalovirus) that causes cellular enlargement and formation of eosinophilic inclusion bodies especially in the nucleus and acts as an opportunistic infectious agent in immunosuppressed conditions (as AIDS)