Om is a mantra and mystical Sanskrit sound of Hindu origin, sacred and important in various Dharmic religions such as Hinduism, Buddhism and Jainism. The syllable is also referred to as omkara (ओंकार oṃkāra) or aumkara (औंकार auṃkāra), literally "om syllable", and in Sanskrit it is sometimes referred to as praṇava, literally "that which is sounded out loudly".