Meanings
nounphotoionisation (countable and uncountable, plural photoionisations)
plural photoionisations
- countableuncountablenatural sciencesThe ejection of electrons from an atom or other species following the absorption of photons.
Origin
- Proto-Indo-European*bʰeh₂-
- Proto-Indo-European*bʰéh₂os
- Proto-Hellenic*pʰáwos
- Ancient Greekφᾰ́ος (phắos)
- Ancient Greekφῶς (phôs)
- Ancient Greekφωτο- (phōto-)
- Englishphoto-
- Proto-Indo-European*h₁ey-
- Proto-Indo-European*h₁éyti
- Proto-Hellenic*éimi
- Ancient Greekἰόν (ión)
- Englishion
- Englishionise
- Englishionisation
- Englishphotoionisation
From photo- + ionisation.
Full word history & related roots →Cite this entry
APA
photoionisation. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/photoionisation
MLA
“photoionisation.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/photoionisation. Accessed November 4, 2026.
Chicago
WatkinsX Dictionary, s.v. “photoionisation,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/photoionisation.
Source: photoionisation on Wiktionary, CC BY-SA 4.0.