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A central vowel (also called a mixed vowel in some older descriptions) is a vowel articulated with the tongue in a position intermediate between that of a front vowel and a back vowel.

The term central refers to an intermediate value on the backness dimension and is not synonymous with mid, which refers to an intermediate value on the height dimension.

In the PHOIBLE 2.0 database (3,020 phoneme inventories),

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