diph·​thong | \ˈdif-ˌthȯŋ, ˈdip-\

Definition of diphthong 

1 linguistics : a gliding (see glide entry 1 sense 4) monosyllabic speech sound (such 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

2 linguistics : digraph

3 : the ligature (see ligature sense 4) æ or œ

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Other Words from diphthong

diphthongal \ dif-​ˈthȯŋ-​(g)əl , dip-​ \ adjective

Examples of diphthong in a Sentence

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

First Known Use of diphthong

15th century, in the meaning defined at sense 1

History and Etymology for diphthong

Middle English diptonge, from Middle French diptongue, from Late Latin dipthongus, from Greek diphthongos, from di- + phthongos voice, sound

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Time Traveler for diphthong

The first known use of diphthong was in the 15th century

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More Definitions for diphthong



English Language Learners Definition of diphthong

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


diph·​thong | \ˈdif-ˌthȯŋ, ˈdip-\

Kids Definition of diphthong

: two vowel sounds joined in one syllable to form one speech sound The sounds of “ou” in “out” and of “oy” in “boy” are diphthongs.

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Comments on diphthong

What made you want to look up diphthong? Please tell us where you read or heard it (including the quote, if possible).


obstinately defiant of authority

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