The Collaborative International Dictionary of English v.0.48:
Theosophic \The`o*soph"ic\, Theosophical \The`o*soph"ic*al\, a. [Cf. F. th['e]osophique.] Of or pertaining to theosophy. -- The`o*soph"ic*al*ly, adv. [1913 Webster]WordNet (r) 3.0 (2006):
theosophical adj 1: of or relating to theosophy; "theosophical writings"