(Sanskrit, literally "the highest brahman") The Absolute or universal self. Also called Paramatman.
"...the great word ‘Tat’ means Para-Brahman Itself, the Eternity. This is the symbol used for that Lord who is beyond all definitions and arguments. This Lord is the embodiment of Supreme Knowledge itself. That is, He wishes to be in the form of Knowledge Absolute." - Swami Sivananda, Lord Siva and His Worship
"Sattva, Rajas and Tamas were unbalanced; therefore, the Mahamanvantara dawned. The yogi must liberate himself from Sattva, Rajas and Tamas to gain the right to enter into the Absolute. Sattva, Rajas and Tamas will be in perfect equilibrium again at the end of the Mahamanvantara; thus, the universe will sleep again within the profound bosom of the Absolute, within the supreme Parabrahman, the Nameless." - Samael Aun Weor, Kundalini Yoga