triphthongal
/trɪfˈθɔŋɡəl/
adjective
- Relating to or consisting of a triphthong (a complex vowel sound made up of three separate vowel sounds in one syllable).
- The triphthongal glide in 'our' is difficult for many language learners.
- Linguistics students practiced identifying triphthongal vowels in various English accents.
- The word 'fire' can be pronounced with a triphthongal sound in some dialects.