English dictionary
om
Definitions, examples, synonyms and antonyms from WordNet 3.0.
interjection
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A mystic syllable or ejaculation used by Hindus and Buddhists in religious rites, -- orig. among the Hindus an exclamation of assent, like <i>Amen</i>, then an invocation, and later a symbol of the trinity formed by Vishnu, Siva, and Brahma.
Source: webster1913