Definition of monophthong in English:

monophthong

Syllabification: mon·oph·thong
Pronunciation: /ˈmänə(f)ˌTHôNG
 
/

noun

Phonetics
A vowel that has a single perceived auditory quality. Contrasted with diphthong, triphthong.
More example sentences
  • The monophthongs and diphthongs total 14 vowel sounds, perhaps the smallest vowel system of any long-established variety of English.
  • Urban Texas is also abandoning the ‘y’ sound after ‘n’, ‘d' and ‘t’, exchanging diphthongs for monophthongs.
  • A study of Tunisian women in Morocco showed that older women categorically use diphthongs/aw/and/aj /, while middle-aged women alternate between diphthongs and monophthongs.

Origin

early 17th century: from Greek monophthongos, from monos 'single' + phthongos 'sound'.

Derivatives

monophthongal

Pronunciation: /ˌmänə(f)ˈTHôNG(g)əl/
adjective
More example sentences
  • The allegation that the president said ‘abugah-rayp’ would mean that he got it almost exactly right (here I'm ignoring the details of the length and monophthongal quality of the [e] vowel)

Definition of monophthong in:

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Pronunciation: ˌ(h)yo͞oməˈresk
noun
a short, lively piece of music