- published: 19 Dec 2014
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The mid-central vowel (also known as schwa) is a type of vowel sound, used in some spoken languages. The symbol in the International Phonetic Alphabet that represents this sound is ⟨ə⟩, a rotated lowercase letter e. The same symbol may be used for the rounded and the unrounded mid-central vowel.
The mid-central unrounded vowel is frequently written with the symbol [ə]. However, this symbol does not specifically represent an unrounded vowel, and is frequently used for almost any unstressed obscure vowel. If precision is desired, the symbol for the close-mid central unrounded vowel may be used with a lowering diacritic, [ɘ̞].
Languages may have a mid-central rounded vowel (a rounded [ə]), 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 [ɵ] for the close-mid central rounded vowel is generally used instead. If precision is desired, the lowering diacritic can be used: [ɵ̞].
A central vowel is a type of vowel sound used in some spoken languages. The defining characteristic of a central vowel is that the tongue is positioned halfway between a front vowel and a back vowel. The central vowels identified by the International Phonetic Alphabet are:
Occasionally, the ad hoc symbols ᵻ, ᵿ (ɪ, ʊ) for near-close central vowels will be seen.