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lightfast

[lahyt-fast, -fahst] /ˈlaɪtˌfæst, -ˌfɑst/
adjective
1.
not affected or faded by light, especially sunlight; colorfast when exposed to light.
Origin
1955-1960
1955-60; light1 + fast1
Related forms
lightfastness, noun
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for lightfast
  • Besides the necessity in the sun-filled loggia to display lightfast objects, there is a method to the presentation.
  • However, these materials as a group should not be considered completely lightfast and caution should be used when displaying them.

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Word Value for lightfast

16
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