U+1158C "𑖌" Siddham Letter O Unicode Character

U+1158C "𑖌" Siddham Letter O is a glyph representing the vowel sound "o" in the Siddham script, an ancient Indian writing system historically used for writing Sanskrit and Buddhist texts, particularly in East Asia. This character belongs to the Siddham block of the Unicode Standard, which was included to support the digital preservation of liturgical and scholarly manuscripts. Siddham script is primarily associated with esoteric Buddhist traditions and is often found in Japanese Shingon and Tendai practices, where it is used for writing mantras and sutras. In its phonetic role, the Siddham Letter O appears as a distinct vowel character, contributing to the accurate transcription of Sanskrit syllables in religious and academic contexts.