noun
- the worship of Satan or the powers of evil.
- a travesty of Christian rites in which Satan is worshiped.
- diabolical or satanic disposition, behavior, or activity.
noun
- the worship of Satan
- a form of such worship which includes blasphemous or obscene parodies of Christian prayers, etc
- a satanic disposition or satanic practices
n.1550s, from Satan + -ist. Ppplied by their enemies to Protestant sects. Meaning “Satan-worshipper” is from 1896. n.1560s, “satanic disposition,” from Satan + -ism. Applied 1820s-30s to the poetry of Byron, etc. Meaning “worship of Satan” dates from 1895, with reference to France, where it was said to be active at that time.