01 a. Relating or belonging to a diphthong; having the nature of a diphthong.
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1.
Relating or belonging to a diphthong; having the nature of a diphthong.
Entry
1 sense
Webster, 1913
Diphthongal
· Diph·thon·gal
· IPA /dɪfˈθɔŋɡəl/