varicellaPronunciation: /ˌvarɪˈsɛlə/Definition of varicella noun [mass noun] Medicine technical term for chickenpox. (also varicella zoster) a herpesvirus that causes chickenpox and shingles; herpes zoster. Origin: late 18th century: modern Latin, irregular diminutive of variolavaricella in other Oxford dictionaries Definition of varicella in the US English dictionary
