The Universal Atlas of Phonetic Evolution
Back to Matrix [au] → [o] Edit this Data

[o]→[au]Certainty: 4/5Commonality: 3/5

Close-mid back rounded vowel to Diphthong au

The phonetic transformation from the close-mid back rounded vowel /o/ to the diphthong /au/ involves a process of diphthongization, where the monophthongal vowel develops into a gliding vowel. This shift typically entails a lowering of the initial vowel component and the addition of a back rounded glide.

Phonetic Effects

Diphthongization, Lowering of the Initial Vowel Component, Backing, Rounding of the Final Vowel Component

Language Examples

*do→tau— Proto-Tibeto-Burman *do diphthongized to Burmese tau, which later became Modern -a.
*pryo→prau— Proto-Tibeto-Burman *pryo diphthongized to Burmese prau, which later became Modern -a.

Related Transformations

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