noun diph·thong \ˈdif-ˌthŋ, ˈdip-\

linguistics : two vowel sounds joined in one syllable to form one speech sound

Full Definition of DIPHTHONG

:  a gliding monosyllabic speech sound (as the vowel combination at the end of toy) that starts at or near the articulatory position for one vowel and moves to or toward the position of another
:  digraph
:  the ligature æ or œ
diph·thon·gal \dif-ˈthŋ-(g)əl, dip-\ adjective

Examples of DIPHTHONG

  1. The sounds of ou in out and of oy in boy are diphthongs.


Middle English diptonge, from Middle French diptongue, from Late Latin dipthongus, from Greek diphthongos, from di- + phthongos voice, sound
First Known Use: 15th century

Other Grammar and Linguistics Terms

ablaut, allusion, anacoluthon, diacritic, gerund, idiom, infinitive, metaphor, semiotics, simile
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