In a Hindu-Buddhist religious context, a Sanskrit seed syllable (bija), often a single syllable sound, can be a basic mantra representing the visible form of a deity.

This story is from November 13, 2005 The Buddhist mantra Wikipedia / Nov 13, 2005, 01:51 IST Follow us ...

In secular context, Chinese were fascinated by the phonetics of Sanskrit language and the arrangement of its alphabet. In 291 A.D., Indian monk Moksala introduced 42 Siddham syllables to China.