phototoxicity

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noun

Any adverse effect due to exposure to light, especially such effects on the skin

OriginEnglish toxicity ← French toxique ← Latin toxicu →
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Meanings

nounphototoxicity (countable and uncountable, plural phototoxicities)

plural phototoxicities

  1. countableuncountableAny adverse effect due to exposure to light, especially such effects on the skin

Origin

  1. Proto-Indo-European*bʰeh₂-
  2. Proto-Indo-European*bʰéh₂os
  3. Proto-Hellenic*pʰáwos
  4. Ancient Greekφᾰ́ος (phắos)
  5. Ancient Greekφῶς (phôs)
  6. Ancient Greekφωτο- (phōto-)
  7. Englishphoto-
  8. Ancient Greekτοξῐκός (toxĭkós)
  9. Ancient Greekτοξικόν (toxikón)
  10. Latintoxicum
  11. Latintoxicu
  12. Frenchtoxique
  13. Englishtoxic
  14. Englishtoxicity
  15. Englishphototoxicity

From photo- + toxicity.

Full word history & related roots →

Translations

Bulgarian фототоксичност
  • фототоксичност (fototoksičnost)adverse effect
Portuguese fototoxicidade
  • fototoxicidadeadverse effect
Spanish fototoxicidad
  • fototoxicidadadverse effect
Cite this entry
APA

phototoxicity. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/phototoxicity

MLA

“phototoxicity.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/phototoxicity. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “phototoxicity,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/phototoxicity.

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