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English definition of “diphthong”


noun [C]     /ˈdɪf.θɒŋ/ /ˈdɪp-/ US  /-θɑːŋ/ specialized
a vowel sound in which the tongue changes position to produce the sound of two vowels → Compare monophthong, triphthongPhonology and phonetics
(Definition of diphthong noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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