Etymology

tenebrescence

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Today it means: Reversible photochromism; the ability of a material to change colour when exposed to sunlight. Full definition →

Latin tenebrēscēns
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The story

  1. Latin · learned borrowing fromtenebrēscēns
  2. English todaytenebrescence

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

Etymology from Wiktionary, CC BY-SA 4.0.