Shakti (Devanagari: शक्ति) from Sanskrit shak – “to be able,” meaning sacred force or empowerment, is the primordial cosmic energy and represents the dynamic forces that are thought to move through the entire universe in Hinduism. Shakti is the concept, or personification, of divine feminine creative power, sometimes referred to as ‘The Great Divine Mother’ in Hinduism. On the earthly plane, Shakti most actively manifests through female embodiment and fertility, though it is also present in males in its potential, unmanifest form.
Not only is the Shakti responsible for creation, it is also the agent of all change. Shakti is cosmic existence as well as liberation, its most significant form being the Kundalini Shakti, a mysterious psychospiritual force. Shakti exists in a state of svātantrya, dependence on no-one, being interdependent with the entire universe.
Definition courtesy Wikipedia.