Question: What is the meaning of the word AUM?

Sri Chinmoy: It means God in His Three aspects: God as the Creator, God as the Preserver and God as the Transformer. He who transforms our ignorance into light. He who transforms our limitations into plenitude. It is a Sanskrit word that is used in all our spiritual disciplines and in our spiritual philosophy.

From:Sri Chinmoy,Earth’s Cry Meets Heaven’s Smile, part 3, Aum Press, Puerto Rico, 1978
Sourced from https://srichinmoylibrary.com/ech_3