photoreactive

P3H4O1T1O1R1E1A1C3T1I1V4E1

adjective

that participates in, or initiates a photoreaction

OriginEnglish reactive ← Middle English acte ← Old French act →
Scrabble 23
Ask AI about this wordChatGPTClaudePerplexityGoogle AIGrok

Meanings

adjectivephotoreactive (comparative more photoreactive, superlative most photoreactive)

comparative more photoreactive · superlative most photoreactive

  1. that participates in, or initiates a photoreaction

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-Italic*wre-
  9. Latinre-
  10. Old Frenchre-
  11. Middle Englishre-
  12. Englishre-
  13. Proto-Indo-European*h₂eǵ-
  14. Proto-Indo-European*h₂éǵeti
  15. Proto-Italic*agō
  16. Latinagō
  17. Latināctus
  18. Latinācta
  19. Old Frenchact
  20. Middle Englishacte
  21. Englishact
  22. Englishreact
  23. Englishreactive
  24. Englishphotoreactive

From photo- + reactive.

Full word history & related roots →
Cite this entry
APA

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

MLA

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

Chicago

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

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