単たん純じゅんヘルペスウイルスMeanings1nounherpes simplex virus; HSVMedical term for the virus that causes herpes simplex infections. Often abbreviated as HSV in English contexts.単たん純じゅんヘルペスウイルスは、口こう唇しんヘルペスや性せい器きヘルペスの原げん因いんとなる。Herpes simplex virus causes cold sores and genital herpes.