Bible Dictionaries
Om

Webster's Dictionary

(interj. & n.) A mystic syllable or ejaculation used by Hindus and Buddhists in religious rites, - orig. among the Hindus an exclamation of assent, like Amen, then an invocation, and later a symbol of the trinity formed by Vishnu, Siva, and Brahma.

Bibliography Information
Webster, Noah. Entry for 'Om'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​o/om.html. 1828.