Augoeides (Greek, "shinning image") is a term that has had various definitions within Western occult tradition over the past two thousand years. The Greek Neoplatonic writers of the late Roman period first used it to refer to the Body of Light or the transformed spiritual body worn by the initiate who had overcome the materialism of the physical world.
It was during the period in China, 1906, Aleister Crowley was performing his Sammasati meditations to explore the causal roots of his karma, even though he acknowledged that "cause" itself was an illusory concept, that the term "Augoeides" came into Crowley's thoughts as the name of the central god-form of his Abra-Melin Operation. Augoeides signifies one's Higher Genius in the Golden Dawn teachings, and in classical Greek "glittering" or "self-glittering one," employed in the third century in De Mysteriis by the Neoplatonist Iamblichus. Hence, Augoeides became Crowley's new name for his Holy Guardian Angel.
In current occult literature augoeides is used as a synonym referring to the Holy Guardian Angel, and shares in all the ambiguities of the term. A.G.H.
Greer, John Michael. The New Encyclopedia of the Occult. St. Paul. MN. Llewellyn Worldwide. 2005. p. 50
Sutin, Lawrence. Do What Thou Wilt: A Life of Aleister Crowley. New York. St. Martin's Griffin. 2000. p. 165