predissociation

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noun

The dissociation of a molecule, following absorption of light energy, by tunnelling

OriginEnglish dissociation ← Middle English pre- ← Latin prae- →
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Meanings

nounpredissociation (plural predissociations)

plural predissociations

  1. chemistryThe dissociation of a molecule, following absorption of light energy, by tunnelling

Origin

  1. Proto-Indo-European*per-
  2. Proto-Indo-European*preh₂-
  3. Proto-Indo-European*préh₂i?
  4. Proto-Italic*prai
  5. Proto-Italic*prai-
  6. Latinprae-
  7. Middle Englishpre-
  8. Englishpre-
  9. Englishdissociation
  10. Englishpredissociation

From pre- + dissociation.

Full word history & related roots →
Cite this entry
APA

predissociation. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/predissociation

MLA

“predissociation.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/predissociation. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “predissociation,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/predissociation.

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