photoresponse

P3H4O1T1O1R1E1S1P3O1N1S1E1

noun

Any measurable chemical or biological response to light

OriginEnglish response ← Middle English respounse ← Old French respuns →
Scrabble 20
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Meanings

nounphotoresponse (plural photoresponses)

plural photoresponses

  1. biologyAny measurable chemical or biological response to 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-Italic*wre-
  9. Latinre-
  10. Proto-Indo-European*spend-
  11. Proto-Indo-European*spondéyeti
  12. Proto-Italic*spondejō
  13. Proto-Italic*spondeō
  14. Latinspondeō
  15. Latinrespondeō
  16. Latinrespōnsum
  17. Old Frenchrespuns
  18. Middle Englishrespounse
  19. Englishresponse
  20. Englishphotoresponse

From photo- + response.

Full word history & related roots →
Cite this entry
APA

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

MLA

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

Chicago

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

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