Absolute, supreme spirit;
The all-compassing, universal, all-pervading, divine, nameless, form-less, forever absolute, in everyone existing principle.
Indestructible, greater then everything one may call great, indescribable, without relative properties. The true self. The inpersonal aspect of god, the light emanating from him.
One cannot become Brahman: you have to discover and realise it
The God Brahma.
See
jyotir and
purusha.