photocycloaddition

noun

Any intermolecular photochemical process leading to a ring systems by formation of two new single bonds

OriginEnglish cycloaddition ← Ancient Greek φωτο- (phōto-) ← Proto-Hellenic *pʰáwos →
Scrabble 32
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Meanings

nounphotocycloaddition (countable and uncountable, plural photocycloadditions)

plural photocycloadditions

  1. countableuncountablechemistryAny intermolecular photochemical process leading to a ring systems by formation of two new single bonds

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. Englishcycloaddition
  9. Englishphotocycloaddition

From photo- + cycloaddition.

Full word history & related roots →
Cite this entry
APA

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

MLA

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

Chicago

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

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