Astral Body

In occult terminology a replica of the physical body, but more subtle and tenuous. It penetrates every nerve, fibre and cell of the physical organism and is constantly in a supersensitive state of oscillation and pulsation. The psychic faculty within the astral body is impressionable to extra-sensory vibrations. The astrological concept is that of a magnetic field wherein the individual does most of his thinking, and from which he draws impressions by way of interpreting changes in the field due to cosmic radiation.

DeVore, Nicholas. Encyclopedia of Astrology. New York: Philosophical Library, 1947.