Definify.com
Webster 1913 Edition
Demoniac
De-mo′ni-ac
,Noun.
1.
A human being possessed by a demon or evil spirit; one whose faculties are directly controlled by a demon.
The
demoniac
in the gospel was sometimes cast into the fire. Bates.
2.
(Eccl. Hist.)
One of a sect of Anabaptists who maintain that the demons or devils will finally be saved.
Webster 1828 Edition
Demoniac
DEMONIAC
or DEMONIACAL or DEMONIAN,Adj.
1.
Pertaining to demons or evil spirits.2.
Influenced by demons; produced by demons or evil spirits.Demoniac phrensy.