(phonetics) A complex vowel sound that begins with the sound of one vowel and ends with the sound of another vowel, in the same syllable. / (rare) A vowel digraph or ligature.

plural of diphthong

Pertaining to or characterized by a diphthong.

simple past tense and past participle of diphthongize

present participle of diphthongize

Third-person singular simple present indicative form of diphthongize

(transitive, phonetics) To change to a diphthong, as by inserting or removing a vowel. / (intransitive, phonetics) To become a diphthong.

plural of diphthongization

Alternative spelling of diphthongisation

By means of a diphthong.