The Collaborative International Dictionary
Pantheistical
Pantheistic \Pan`the*is"tic\, Pantheistical \Pan`the*is"tic*al\, a. Of or pertaining to pantheism; founded in, or leading to, pantheism. -- Pan`the*is"tic*al*ly, adv.
Wiktionary
pantheistical
a. of or relating to pantheism