This term is here understood to signify the cult honoring Satan with quasi-religious ceremonies in mockery of Christian rites, and with the performance of other works tending to promote the cause of Satan's dominion in this world. That such a cult exists appears clearly established, but no reliable information is available regarding the extent of its diffusion. For an explanation of the sources and rationale of this curious phenomenon, as well as for a judgment of its morality, see devil worship.
[m. d. griffin]
"Satanism." New Catholic Encyclopedia. . Encyclopedia.com. (August 9, 2018). http://www.encyclopedia.com/religion/encyclopedias-almanacs-transcripts-and-maps/satanism
"Satanism." New Catholic Encyclopedia. . Retrieved August 09, 2018 from Encyclopedia.com: http://www.encyclopedia.com/religion/encyclopedias-almanacs-transcripts-and-maps/satanism