photoallergy

P3H4O1T1O1A1L1L1E1R1G2Y4

noun

An allergy that is activated by light.

OriginEnglish allergy ← German Allergie ← Ancient Greek ἔργον (érgon) →
Scrabble 21
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Meanings

nounphotoallergy (plural photoallergies)

plural photoallergies

  1. medicineAn allergy that is activated by light.

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. Proto-Indo-European*h₂el-
  9. Proto-Indo-European*h₂élyos
  10. Proto-Hellenic*ál͏̌l͏̌os
  11. Ancient Greekᾰ̓́λλος (ắllos)
  12. Proto-Indo-European*werǵ-
  13. Proto-Indo-European*wérǵom
  14. Proto-Hellenic*wérgon
  15. Ancient Greekἔργον (érgon)
  16. GermanAllergie
  17. Englishallergy
  18. Englishphotoallergy

From photo- + allergy.

Full word history & related roots →

Translations

Catalan fotoal·lèrgia
  • fotoal·lèrgiaTranslations
Romanian fotoalergie
  • fotoalergieTranslations
Spanish fotoalergia
  • fotoalergiaTranslations
Cite this entry
APA

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

MLA

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

Chicago

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

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