Mid-central Vowel - Mid-central Rounded Vowel

Languages may have a mid-central rounded vowel (a rounded ), distinct from both the close-mid and open-mid vowels. However, since no language is known to distinguish all three, there is no separate IPA symbol for the mid vowel, and the symbol for the close-mid central rounded vowel is generally used instead. If precision is desired, the lowering diacritic can be used: . This vowel can also be represented by adding the more rounded diactric to the schwa symbol, or by combining the raising diactric with the open-mid central rounded vowel symbol, although it's rare to use such symbols.