| n. | 1. | (Med.) any of several dozen DNA-containing virus of the family Herpetoviridae, including among them such human-disease-causing agents as Herpes simplex virus causing oral and genital herpes, varicella-zoster virus (Herpes zoster virus) causing shingles and chickenpox (varicella), Epstein-Barr virus (EB virus) causing infectious mononucleosis, and Cytomegalovirus. |