Manifestation means turning your dreams into reality by believing you can achieve them. This article explores different manifestation techniques you can use. MANIFEST definition : 1. to show something clearly, through signs or actions: 2. to appear or become clear: 3. to use…. Learn more. Learn what manifestation means and how to do it from a science-based and spiritual perspective. Find out how to use your thoughts, feelings, and beliefs to create the circumstances and outcomes that make for a fulfilling life. Manifestation Definition The definition of manifestation is based on the theory of quantum physics that everything in the universe is energy. People who practice manifestation believe that the mind is a powerful tool. By aligning their energy with universal energy, they can manifest what they want in life.