1. ಓಂ

    ♪ ōm
      noun
    1. a mystic monosyllable, set forth as the object of profound religious meditation.
    2. the mystic syllable that is the union of a, u and m sounds which represent the Hindu triad Viṣṇu, Śiva, and Brahma respectively.
    3. an auspicious syllable used as the first letter in religious literary works.