Brahman
The origin and meaning of the term brahman are shrouded in mystery. Using the verbal root √bṛh, Western Indological scholars derive such meanings as "sacred magical power" (Hermann Oldenberg), "form, formulation" (Paul Thieme), "priestly utterance," "energy that is expressed in paradoxical terms" (Louis Renou), and "the live connection that holds the cosmos together" (Jan Hesterman) The meanings of brahman in the ancient "heard texts" (śrutis) and later Indian philosophical systems are not unrelated to these meanings. For example, the Vedic understanding of the brahman survives in Bhartrhari's concept of the "śabda brahman." Likewise, the ideas of power, energy, and cosmic unity among opposites are taken up in the Vedāntic notion of the brahman as absolute reality. The notion of the brahman as the sacred power within a priest may have contributed to an identification of the brahman with the inner spirit (ātman). This transformation of a much older notion into a discursively idealized philosophical concept resembles the way the concept of logos was transformed into "logic" "Vernunft," and "language."
Etymologically, the word brahman has two constituent components: the verbal root √bṛh and the suffix matup. The verbal root √bṛh means "to grow" and "the great," and together with the suffix provides two allied meanings: "the greatest" and "the root of all things." In the Vedic hymns the term brahman not only refers to the power contained in the words recited but also to the mysterious power present in the utterances of the Vedic hymns.