A diphthong, pronounced /ˈdɪf. θɒŋ/ or /ˈdɪp. θɒŋ/, (also gliding vowel) (from Greek δίφθογγος, diphthongos, literally "two sounds" or "two tones") refers to two adjacent vowel sounds occurring within the same syllable. In most dialects of English, the words eye, boy, and cow contain examples of diphthongs.
OmegaWiki Dictionary
Ω
diphthong Combination of two (or three, in triphthong) vocalic elements in a single\nsyllable.
