The open back rounded vowel, or low back rounded vowel,[1] is a type of vowel sound, used in some spoken languages. The symbol in the International Phonetic Alphabet that represents this sound is ⟨ɒ⟩. It is called Latin turned alpha being a rotated version of Latin alpha. It seems a "turned script a", being a rotated version of "script (cursive) a", which is the variant of a that lacks the extra stroke on top of a "printed a". Latin turned alpha a ⟨ɒ⟩ has its linear stroke on the left, whereas Latin alpha a ⟨ɑ⟩ (for its unrounded counterpart) has its linear stroke on the right.
Its vowel height is open, also known as low, which means the tongue is positioned far from the roof of the mouth – that is, low in the mouth.
Its vowel backness is back, which means the tongue is positioned back in the mouth without creating a constriction that would be classified as a consonant.
It is rounded, which means that the lips are rounded rather than spread or relaxed.
Fully back. Used by some speakers, particularly young female speakers of northern accents. Other speakers use an unrounded vowel [ɑː~ɑ̟ː].[2] See Afrikaans phonology
Near-back and weakly rounded.[9] Some younger speakers of the General variety may actually have a higher and fully unrounded vowel [ʌ̈].[9] See South African English phonology
Somewhat raised. Contemporary RP speakers pronounce a closer vowel [ɔ]. It is proposed that the /ɒ/ vowel of Conservative RP, which is normally described as a rounded vowel, is pronounced by some speakers without rounded lips for whom the characteristic quality is rather one of sulcality.[11] See English phonology
Vowel /ɔ(:)/ is lowered (phonetic realization of /ɔ(:)/ is much lower in GA than in RP). However, "Short o" before r before a vowel (a short o sound followed by r and then another vowel, as in orange, forest, moral, and warrant) is realized as [oɹ~ɔɹ].
Somewhat fronted and raised, with only slight rounding; sometimes transcribed in IPA with ⟨ɔ⟩. Unrounded [ɑ] in some dialects.[22] See Hungarian phonology
Northern Kedah subdialect/dialect. Allophone of /a/ in word-final position in open-ended words and close-ended words that end with a glottal stop /ʔ/ or a glottal fricative /h/.
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