diphthongisation

A form of diphthongization — The process by which a single vowel sound (monophthong) shifts to a two-vowel vocalization (diphthong).

OriginEnglish diphthong ← French diphtongue ← Latin diphthongu →
Scrabble 26
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Meanings

noundiphthongisation (countable and uncountable, plural diphthongisations)

plural diphthongisations

  1. UKalternativecountableuncountableAlternative spelling of diphthongization.

Origin

  1. Latindiphthongu
  2. Frenchdiphtongue
  3. Englishdiphthong
  4. Englishdiphthongisation

From diphthong + -isation.

Full word history & related roots →
Cite this entry
APA

diphthongisation. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/diphthongisation

MLA

“diphthongisation.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/diphthongisation. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “diphthongisation,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/diphthongisation.

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