UVB


Meaning of UVB in English

ˌyü(ˌ)vē-ˈbē noun

: the region of the ultraviolet spectrum which extends from about 280 to 320 nm in wavelength and from which comes the radiation primarily responsible for sunburn, aging of the skin, and the development of skin cancer

Webster's New International English Dictionary.      Новый международный словарь английского языка Webster.