> as lemmas
triphthongal
triphthongal adj. 
/trɪfˈθɒŋɡəl/ pertaining to or of the nature of a triphthong.
/trɪfˈθɒŋɡəl/ pertaining to or of the nature of a triphthong.ΘΚΠ
the mind > language > linguistics > study of speech sound > speech sound > vowel > [adjective] > triphthong
triphthongal1749
1749 Philos. Trans. 1748 (Royal Soc.) 45 403 7 vocal Notes or Vowels,..struck, as one may say, in diphthongal or triphthongal Chords with each other.
<
as lemmas