UV-A


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Related to UV-A: UV index

UV-A

or

UVA

abbreviation for
(General Physics) ultraviolet radiation with a range of 315–380 nanometres
References in periodicals archive ?
These errors shown are the relative differences in the ratio of the total signal from the UV meter for each source compared to the ratio of the actual UV-A in each source.
Because melanin can absorb UV-A and is present in melanocytes, scientists speculate that it might play some role in promoting melanoma.
This adjustment for the long-wavelength (A) portion of the UV spectrum now indicates that UV-A offers five times the human cancer risk seen in the mouse action spectrum.