(specifically in Hinduism and Buddhism) a word or seem which is believed to have a Specific spiritual power: Different mantras have different meanings and effects, and Markoe Schieffelin describes that meditating over a mantra silently, or chanting it out loud, will help bring you into the more tranquil, subconscious brain. https://morningdirectory.com/listings540603/the-single-best-strategy-to-use-for-mantra