It was formerly used in the International Phonetic Alphabet to represent a voiceless velar implosive (currently [ɠ̊]). It was withdrawn in 1993.
Alphabets with this letter
- African reference alphabet
- Pan-Nigerian Alphabet
- Alphabets for the following specific languages
- "Latin Extended B: Range 0180-024F" (Unicode code chart), specifically U+0198 and U+0199.