monophthong

noun
🔊/ˈmɒnəfθɒŋ/, 🔊/ˈmɒnəθɒŋ/
🔊/ˈmɑːnəfθɔːŋ/, 🔊/ˈmɑːnəθɔːŋ/
(phonetics语音学)
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  1. a speech sound that consists of only one vowel sound, for example the // sound in queue /kjuː/ 单元音compare diphthong, triphthong
    Word Originearly 17th cent.: from Greek monophthongos, from monos ‘single’ + phthongos ‘sound’.