triphthong

noun [C] /ˈtrɪf.θɒŋ/ /ˈtrɪp-/

/-θɑːŋ/ phonetics

Definition

› a vowel sound in which the tongue changes position to produce the sound of three vowels → Compare diphthong, monophthong

(Definition of triphthong noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

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