Meaning of Triphthong in Urdu

In phonetics, a triphthong (/ˈtrɪfθɒŋ/ or /ˈtrɪpθɒŋ/) (from Greek τρίφθογγος, "triphthongos", literally "with three sounds," or "with three tones") is a monosyllabic vowel combination involving a quick but smooth movement of the articulator from one vowel quality to another that passes over a third.