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Definition of monophthong noun from the Oxford Advanced Learner's Dictionary

monophthong

noun
 
/ˈmɒnəfθɒŋ/,
 
/ˈmɒnəθɒŋ/
 
/ˈmɑːnəfθɔːŋ/,
 
/ˈmɑːnəθɔːŋ/
(phonetics)
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  1. a speech sound that consists of only one vowel sound, for example the // sound in queue /kjuː/ compare diphthong, triphthong
    Word Originearly 17th cent.: from Greek monophthongos, from monos ‘single’ + phthongos ‘sound’.
See monophthong in the Oxford Advanced American Dictionary
trait
noun
 
 
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