n.
Pronunciation: ˌ s ī -t ə - ˌ me-g ə -l ō - ' v ī -r ə s
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)