Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Resistant to fading.

Etymologies

From light +‎ fast. (Wiktionary)

Examples

  • The ratings range from Class I (very lightfast) to Class V (very fugitive).

    Archive 2010-04-01

  • The most lightfast pigments around are the iron oxides, which are harmless to the environment.

    Lightfastness and Dyes

  • " I would guess that as compounds are made to be more lightfast that they tend also to be harder on the environment."

    Lightfastness and Dyes

  • I wonder about the environmental and toxicity dimensions of the quest for lightfast dyes and pigments.

    Lightfastness and Dyes

  • James, in your experience have you found if different materials the pigments are placed on Paper, canvas, etc make a difference with how lightfast they are?

    Lightfastness: Markers

  • I would guess that as compounds are made to be more lightfast that they tend also to be harder on the environment.

    Lightfastness and Dyes

  • On many graphic art products, such as inks or felt-tipped markers, it really means “waterproof,” rather than “lightfast.”

    Archive 2010-03-01

  • I often use ballpoint so am always on the lookout for a good, archival, lightfast ballpoint pen.

    Lightfastness and Dyes

  • The most stable painting medium is pastel, but modern lightfast watercolors are now more stable than oil or acrylic mediums.

    Lightfastness in Pencils, Watercolors, and Oils

  • Over the next few years, of those 19, only 2 showed themselves to be fairly lightfast: Archival Oils Alizarine Permanent PR175 / PR122, and M.

    Lightfastness and Alizarin Crimson

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