:Diphthong:

Pronunciation GB: ˈdɪfθɒŋ, GA: ˈdɪfθɑŋ

A complex vowel which changes its quality within a single syllable. A diphthong has an initial quality and a target quality. Examples from English: eɪ aʊ ɪə, as in day, down, dear .

Diphthongs may be categorised in a number of ways: