O with breve (О̆ о̆; italics: О̆ о̆) is a letter of the Cyrillic script. In all its forms, it is a homoglyph of the Latin letter O with breve (Ŏ ŏ Ŏ ŏ).[a]
O with breve is used in Itelmen, where it represents the extra-short close-mid back rounded vowel [ŏ] (although the newspaper Aboriginal of Kamchatka uses О with ring above instead).
It is also used in an alphabet of Khanty instead of О with diaeresis, where it represents the close-mid front rounded vowel [ø].
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