Mid back rounded vowel

Mid back rounded vowel
IPA Number307 430
Audio sample
Entity (decimal)o​̞
Unicode (hex)U+006F U+031E
Braille⠕ (braille pattern dots-135)⠠ (braille pattern dots-6)⠣ (braille pattern dots-126)

The mid back rounded vowel is a type of vowel sound, used in some spoken languages. While there is no dedicated symbol in the International Phonetic Alphabet that represents the exact mid back rounded vowel between close-mid [o] and open-mid [ɔ], it is normally written o. If precision is desired, diacritics may be used, such as or ɔ̝, the former being more common. There was an alternative IPA symbol for this sound, ⟨ꭥ⟩. A non-IPA letter is also found.

Just because a language has only one non-close non-open back vowel, it still may not be a true-mid vowel. Tukang Besi is a language in Sulawesi, Indonesia, with a close-mid [o]. Taba, another language in Indonesia, in the Maluku Islands, has an open-mid [ɔ]. In both languages, there is no contrast with another mid (true-mid or close-mid) vowel.

Kensiu, in Malaysia and Thailand, is highly unusual in that it contrasts true-mid vowels with close-mid and open-mid vowels without any difference in other parameters, such as backness or roundedness.

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