UVA

noun \ ˌyü-(ˌ)vē-ˈā \

Definition of UVA

: radiation that is in the region of the ultraviolet spectrum which extends from about 320 to 400 nm in wavelength and that causes tanning and contributes to aging of the skin

First Known Use of uva

1975

in the meaning defined above

See Words from the same year

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Medical Dictionary

UVA

noun \ -ˈā \

medical Definition of UVA

: radiation that is in the region of the ultraviolet spectrum which is nearest to visible light and extends from about 320 to 400 nm in wavelength and that causes tanning and contributes to aging of the skin