Skip to definition.
Get the FREE one-click dictionary software for Windows or the iPhone/iPad and Android apps


Verb: diphthongize  'dif,thóng,Iz or 'dip,thóng,Iz
  1. Change from a simple vowel to a diphthong
    "This vowel diphthongized in Germanic";
    - diphthongise [Brit]

Derived forms: diphthongizing, diphthongized, diphthongizes

Type of: change, shift, switch