photoactivity

P3H4O1T1O1A1C3T1I1V4I1T1Y4

noun

The condition of being photoactive

OriginEnglish activity ← Middle French activité ← Latin āctīvitās →
Scrabble 26
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Meanings

nounphotoactivity (countable and uncountable, plural photoactivities)

plural photoactivities

  1. countableuncountableThe condition of being photoactive

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*h₂eǵ-
  9. Proto-Indo-European*h₂éǵeti
  10. Proto-Italic*agō
  11. Latinagō
  12. Ancient Greekἐνεργητικός (energētikós)
  13. Latināctīvus
  14. Latināctīvitās
  15. Middle Frenchactivité
  16. Englishactivity
  17. Englishphotoactivity

From photo- + activity.

Full word history & related roots →
Cite this entry
APA

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

MLA

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

Chicago

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

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