Brahman means Ultimate Reality.

The word Brahman means ultimate truth or reality, which cannot be indicated by any word. The Brahman or God in truth.

The Brahman can be expressed through silence because it is beyond the experience of form, time, and space. Therefore, the word Brahma clearly stands for the essence of the three states, which is consciousness only.

The final stage of the pursuit of truth is to know that the ‘Self’ is consciousness. Consciousness is the ultimate truth or Brahman or God in truth.

Even the Bhagavad Gita says: ~ Brahmano hi pratisthaham ~ Brahman (God in truth) is considered the all-pervading consciousness, which is the basis of all the animate and inanimate entities and material. (14.27).

When Bhagavad Gita says, God is considered the all-pervading consciousness which is the basis of all the animate and inanimate entities and material then nothing has to be accepted as God other than consciousness.

Brahman means the Ultimate Reality

All reality has its source in Brahman. All reality has its grounding sustenance in Brahman. It is in Brahman that all reality has its ultimate repose. Vedas specifically, is consciously and exclusively aiming toward this reality termed Brahman.

In the 'Taittariya Upanishad II.1:~ Brahman is described in the following manner: "Satyam jnanam anantam brahma", "Brahman is of the nature of truth, knowledge, and infinity." Infinite positive qualities and states have their existence secured solely by Brahman's very reality. Brahman is a necessary reality, eternal (i.e., beyond the purview of temporality), fully independent, non-contingent, and the source and ground of all things. Brahman is both immanently present in the realm of materiality, interpenetrating the whole of reality as the sustaining essence that gives it structure, meaning, and existential being, yet Brahman is simultaneously the transcendent origin of all things (thus, panentheistic). : ~ Santthosh Kumaar