ब्रह्मन्

Brahman (Devanāgarī: ब्रह्मन् bráhman) is the eternal, unchanging, infinite, immanent, and transcendent reality which is the Divine Ground of all matter, energy, time, space, being, and everything beyond in this Universe.^[1] The nature of Brahman is described as transpersonal, personal and impersonal by different philosophical schools. In the Rig Veda, Brahman gives rise to the primordial being Hiranyagarbha that is equated with the creator God Brahmā. The trimurti can thus be considered a personification of Brahman as the active principle behind the phenomena of the universe।

The word "Brahman" is traditionally derived from the verb ((brh)) (Sanskrit: to grow), and connotes greatness and infinity. The Mundaka Upanishad says:

Om- That supreme Brahman is infinite, and this conditioned Brahman is infinite। The infinite proceeds from infinite। Then through knowledge, realizing the infinitude of the infinite, it remains as infinite alone।

taken from Wikipedia