A diphthong is a combination of two vowel sounds pronounced in one syllable. It begins with one vowel sound and glides into another within the same syllable.
For example:
- In the word "coin", the diphthong is represented by the combination of the sounds /ɔɪ/.
- In the word "out", the diphthong is /aʊ/.
The two vowel sounds blend together, creating a smooth transition from one sound to the next.
