Ω (SKT. ॐ) or AUM — in the Hindu and Vedic traditions of sacred sound, the primordial mantra, power word. is Often interpreted as a symbol of the divine triad, Brahma, Vishnu and Shiva. is Used in the practices of yoga and techniques of meditation.In accordance with the Vedic heritage, it is believed that the sound om was the first manifestation not yet manifested Brahman, which gave rise to the perceived Universe, which occurred from the vibration caused by the sound.