U+179E "ឞ" Khmer Letter Sso Unicode Character

U+179E "ឞ" Khmer Letter Sso is a rare and largely obsolete character from the Khmer script, historically used to represent a specific sibilant sound in the Old Khmer language, particularly in transcriptions of Pali and Sanskrit texts. It visually resembles a distinct, angular form that sets it apart from the more common Khmer consonant characters, and its usage has diminished over time as the modern Khmer language simplified its phonetic inventory, making it now primarily a subject of academic interest and digital preservation for historical linguistic studies.