Inner Man. An occult term, used to designate the true and immortal Entity in us, not the outward and mortal form of clay that we call our body. The term applies, strictly speaking, only to the Higher Ego, the “astral man” being the appellation of the Double and of Kâma Rupa (q.v.) or the surviving eidolon.
Source: H.P.Blavatsky - The Theosophical Glossary