It is used in a number of Polynesian alphabets as the letter ʻokina to represent the glottal stop, and in the Uzbek alphabet to form the letters Oʻ and Gʻ, which correspond to Ў and Ғ respectively in the Uzbek Cyrillic alphabet.
In Unicode code charts it looks identical to the U+2018 ‘ LEFT SINGLE QUOTATION MARK,[1] but this is not true for all fonts.
The character is used in many Polynesian languages as ʻokina, a unicameral consonant letter used within the Latin script to mark the phonemic glottal stop.
In the Uzbek alphabet, the letter turned comma is used to write the letters Oʻ (Cyrillic Ў) and Gʻ (Cyrillic Ғ).
The letter turned comma is also often used to romanize aspirated consonants in Armenian.