Latin rotated alpha
Ɒɒ
The Ɒ ( lower case ɒ) is a letter of the Latin writing system . It's a vertically mirrored version of the letter Ɑ .
In the international phonetic alphabet, the lowercase letter ɒ is the symbol for the rounded open back vowel . The letter is used in American phonetic notation for the same purpose. There voiceless vowels are represented by the capitalization of the corresponding letter, accordingly the capital letter Ɒ there represents the voiceless version of the ɒ.
Presentation on the computer
Unicode contains the Ɒ at the code points U + 2C70 (uppercase letter) and U + 0252 (lowercase letter).