a sound formed by the combination of two vowels in a single syllable, in which the sound begins as one vowel and moves towards another (as in coin, loud, and side) 二合元音,复合元音(如在coin, loud和side中)。 常与 monophthong, triphthong 相对 ■a digraph representing the sound of a diphthong or single vowel (as in feat) 二合元音字母(如在feat中) ■a compound vowel character; a ligature (such as æ) 元音连字(如æ)
派生 diphthongal [-ˈθɒŋg(ə)l] adjective 语源
late Middle English: from French diphtongue, via late Latin from Greek diphthongos, from di- 'twice' + phthongos 'voice, sound'
用法
For a discussion of the pronunciation of diphthong, see usage at diphtheria