Phonetics. a monosyllabic speech-sound sequence perceived as being made up of three differing vowel qualities, as the pronunciation of our, especially in r-dropping dialects.
a trigraph.
更多triphthong例句
Only the first two of these four words contain a triphthong.
Triphthong, trif′thong, n. a combination of three vowels to form one sound.
Trigraph, trī′graf, n. a combination of three letters sounded as one, a triphthong.
This triphthong (aye) is a combination of the slender sound of a, heard in pa-per; and the e in metre.