What does a diphthong consist of?

A diphthong is defined as a complex vowel sound that begins with one vowel sound and glides into another within the same syllable. Specifically, it consists of two adjacent vowel sounds pronounced in one breath. For example, in the word "coin," the vowel sound transitions from the /ɔ/ to the /ɪ/, creating a singular but dynamic sound that is characteristic of diphthongs.

This understanding of diphthongs is crucial for recognizing and teaching proper pronunciation, as they influence the sounds we hear in spoken language. Essentially, this is what sets diphthongs apart from other phonetic combinations such as consonant blends or single vowel sounds.