photoisomer

P3H4O1T1O1I1S1O1M3E1R1

noun

An isomer formed via photoexcitation.

OriginEnglish isomer ← Ancient Greek φωτο- (phōto-) ← Proto-Hellenic *pʰáwos →
Scrabble 18
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Meanings

nounphotoisomer (plural photoisomers)

plural photoisomers

  1. chemistryAn isomer formed via photoexcitation.

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. Englishisomer
  9. Englishphotoisomer

From photo- + isomer.

Full word history & related roots →
Cite this entry
APA

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

MLA

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

Chicago

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

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