Definition of triphthong in English English dictionary
A monosyllabic vowel combination usually involving a quick but smooth movement from one vowel to another that passes over a third one
A combination of three vowel sounds in a single syllable, forming a simple or compound sound; also, a union of three vowel characters, representing together a single sound; a trigraph; as, eye, -ieu in adieu, -eau in beau, are examples of triphthongs
triphthong
Hyphenation
triph·thong
Pronunciation
Etymology
() From Ancient Greek τρία (“three”) + φθόγγος (phthongos, “sound”).