(Sanskrit, literally “changeless samadhi”) An ecstasy within the divine abode of the Gods. Originally a term from Vedanta, referring to the highest possible state of consciousness, a state of no-mind, and non-dual union with Brahman.
"The Purusha experiences the transcendental state of independence - Kaivalya - in Nirvikalpa Samadhi. Now ignorance is destroyed. The Purusha realizes that it was only His consciousness that gave Prakriti its power to please Him, to give Him joy, to delude Him, and to bind Him. He enjoys the bliss of His own nature and remains for ever independent and blissful. All thought ceases once for all in Nirvikalpa Samadhi." —Swami Sivananda