demonianism

/dɪˈmoʊni.ənɪzəm/

demonianism means possession by a demon or demons.

demonianism is pronounced /dɪˈmoʊni.ənɪzəm/.

Etymology

From demonian + -ism.

noun

Possession by a demon or demons.“Strictly speaking, the belief in demonianism was distinct from that in witchcraft.”