English

Definition of triphthongal adjective from the Oxford Advanced Learner's Dictionary

 

triphthongal

 adjective
adjective
BrE BrE//trɪfˈθɒŋɡl//
 
; NAmE NAmE//trɪfˈθɔːŋɡl//
 
, NAmE//trɪfˈθɑːŋɡl//
 
; BrE BrE//trɪpˈθɒŋɡl//
 
; NAmE NAmE//trɪpˈθɔːŋɡl//
 
, NAmE//trɪfˈθɑːŋɡl//
 
(phonetics)
 
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combining three vowel sounds or vowel letters, for example the sounds /aɪə/ in fire /faɪə(r)/ compare diphthongal, monophthongal