triphthong
/ˈtrɪfθɒŋ/noun
1- a union of three vowels (letters or sounds) pronounced in one syllable (as in fire)三合元音。与DIPHTHONG, MONOPHTHONG相对。
1.1
- three written vowel characters representing the sound of a single vowel (as in beau)（表示一个元音的）三元音字母（如beau）。
派生词
triphthongal
adjective词源
mid 16th cent.: from French triphtongue, from tri- 'three', on the pattern of diphthong.