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UVA

or UV-A

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noun
  1. ultraviolet light with a relatively long wavelength, able to penetrate the deep layers of the skin.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for uv-a

UV-A

UVA

abbreviation for
  1. ultraviolet radiation with a range of 315–380 nanometres
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012