ॐ
Oṃ
OH-m (rhymes with 'home'; the 'O' is a rounded, open vowel that naturally arises from the combination of 'A' and 'U', ending with a nasal 'M' where the lips gently close)
Level 1Etymology
Root: Derived from the coalescence of three mātṛkā (seed sounds): A (अ), U (उ), and M (म). Pāṇini's Aṣṭādhyāyī treats it as a praṇava (प्रणव), from the root 'ṇu' (to praise, to sound) with the prefix 'pra' (forth), meaning 'that which is sounded forth in praise.' The Māṇḍūkya Upaniṣad identifies A-U-M as representing the three states of consciousness, with the silence after as the fourth (turīya).
Literal meaning: The primordial sound of affirmation and divine resonance; literally 'that which is sounded forth' or 'the sound of assent to the ultimate.'
Definition
Om is the most sacred syllable in Hinduism, chanted at the beginning and end of prayers, rituals, and scriptural recitations. It serves as a universal invocation that sanctifies action and focuses the mind. In daily practice, it is both a greeting to the divine and a marker that one is entering sacred space.
Om represents the totality of consciousness across its three states — waking (A), dreaming (U), and deep sleep (M) — and points beyond them to turīya, pure awareness itself. It is the praṇava, the humming vibration through which the individual ātman recognizes its identity with Brahman. Meditation on Om is prescribed as the most direct means of Self-knowledge.
Om is Brahman itself in the form of sound (śabda-brahman). It is not a symbol pointing to something else but the very vibration from which the universe emanates, in which it is sustained, and into which it dissolves. The Māṇḍūkya Upaniṣad declares: 'Oṃ ity etad akṣaram idaṃ sarvam' — this imperishable syllable is all of this.
Appears In
Common Misconception
A common misconception is that Om is simply a 'chant' or 'mantra' like any other, used mainly for relaxation. In reality, the Hindu tradition regards Om as the source-sound of all mantras (bīja of bījas) and identical with ultimate reality itself. It is not one sacred sound among many — it is the ground from which all sacred sound arises. Reducing it to a relaxation technique strips away its ontological and soteriological significance.
Modern Application
Om offers modern practitioners an anchor of stillness amid constant stimulation. Its three-part structure — A rising from the belly, U resonating in the chest, M closing at the lips — naturally lengthens the exhalation and activates the parasympathetic nervous system, making it a powerful tool for stress regulation. Beyond physiology, chanting Om before any task can serve as a micro-ritual of intention-setting, shifting one from reactive autopilot to conscious presence. In a fragmented digital age, Om reminds us that beneath the noise of thoughts, notifications, and obligations, there is a continuous hum of awareness that is always whole, always available.
Quick Quiz
According to the Māṇḍūkya Upaniṣad, what do the three constituent sounds of Om (A-U-M) represent?