S̩

S̩ (minuscule: s̩) is a letter of the Latin alphabet, formed from S with the addition of a vertical line below it. It is used in Yoruba to represent the sound [ʃ] (like English "sh").

The line is sometimes replaced by a dot, i.e. Ṣ ṣ.

[s̩] is also the International Phonetic Alphabet symbol for a syllabic "s" sound.

Computer encoding

Unicode does not include precomposed characters for S̩ s̩—they must be represented with a combining diacritic, which may not align properly in some fonts. Nevertheless, the sequence of base character + combining diacritic is given a unique name. In Unicode: