tenebrescence

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noun

Reversible photochromism; the ability of a material to change colour when exposed to sunlight.

Scrabble 19

Meanings

nountenebrescence (usually uncountable, plural tenebrescences)

plural tenebrescences

  1. uncountableusuallynatural sciencesReversible photochromism; the ability of a material to change colour when exposed to sunlight.
    1 more example

    Most fundamental investigations of tenebrescence have dealt exclusively with the alkali halides, since, in addition to their relative simplicity, they were readily available in large single crystals of high optical purity. The reversible discoloration of alkali halides was originally observed by E. Goldstein late in the last century.

    1954, The American Mineralogist, volume 39, page 616

Origin

  1. Latintenebrēscēns
  2. Englishtenebrescence

Learned borrowing from Latin tenebrēscēns, present participle of tenebrēscere (“to grow dark”).

Full word history & related roots →
Cite this entry
APA

tenebrescence. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/tenebrescence

MLA

“tenebrescence.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/tenebrescence. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “tenebrescence,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/tenebrescence.

Source: tenebrescence on Wiktionary, CC BY-SA 4.0.