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Topic: LINGUISTICS

Date: 1400-1500
Language: French
Origin: Late Latin diphthongus 'two sounds', from Greek phthongos 'voice, sound'

diphthong

noun
     
diph‧thong [countable] technical
SL a vowel sound made by pronouncing two vowels quickly one after the other. For example, the vowel sound in 'main' is a diphthong.
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