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light-fast

adjective

  1. (of a dye or dyed article) unaffected by light
“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


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Example Sentences

In Christian iconography, it was gold that signified the aura of sanctity, but, as Baroque masters experimented with the effects of extreme light and dark, the hunt for a deep, light-fast yellow became urgent.

Worse, when Dr Stenger and his colleagues dug out photographs taken of them when they were new, the researchers were dismayed to find that the photographs were not light-fast either, and that they too had faded over the years.

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