U+022B "ȫ" Latin Small Letter O with Diaeresis and Macron Unicode Character

U+022B "ȫ" Latin Small Letter O with Diaeresis and Macron is a specialized Latin letter that combines a base "o" with a diaeresis (two dots above) and a macron (a horizontal line above the diaeresis), indicating a prolonged or stressed vowel sound with a specific phonetic quality, such as a long front rounded vowel. It is primarily used in linguistic transcription systems, including the Uralic Phonetic Alphabet, and in some romanization schemes for languages like Livonian or Old Norse, where it distinguishes vowel length and rounding. This character is rarer than its uppercase counterpart "Ȫ" (U+022A) but serves similar scholarly and technical purposes within Unicode's extended Latin block for precise textual representation.