Assertion: diphthong | /r/DefinedAs | sound
Facets:
Source sentences:
text: A diphthong is defined as a sound which consists of `a movement of glide from one vowel to another' (Roach, 2000).
text: A diphthong is defined as a sound formed by the combination of two vowel sounds in a single syllable, in which the sound begins as one vowel and moves towards another.