(Sk. "Knowledge"; also jnana.) Equivalent of Illumination, Gnosis (inner wisdom). There are several varieties:
Atma Vidya -- Self-knowledge.
Gupta Vidya -- Secret wisdom.
Aryajñana -- Exalted understanding.
Rahasya -- Mystery-Gnosis.
Brahma Vidya -- Supreme illumination.
Source: Magician's Dictionary