Phonetics Glossary Homework
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DIPHTHONGS
Origin: Late Middle English: from French diphtongue, via late Latin from Greek diphthongos, from
di- 'twice' + phthongos 'voice, sound'.
A diphthong is a special kind of vowel sound. Most vowel sounds in English are made with the
mouth in one position and with one pure sound. These vowel sounds are called monophthongs
(mono meaning “one” and phthong meaning “sound”). A diphthong is one vowel sound formed by
the combination of two vowel sounds. A diphthong begins as one vowel sound and moves toward
another, such as the vowel sounds in coin or loud