Epstein-Barr virus n 1: the herpes virus that causes infectious mononucleosis; associated with specific cancers in Africa and China [syn: {Epstein-Barr virus}, {EBV}]
Herpesvirus \Her"pes*vir`us\, n. (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}. [PJC]