1. (a.) Of or pertaining to Lucifer; having the pride Of Lucifer; satanic; devilish.

2. (a.) of or pertaining to the Luciferians or their leader.

3. (n.) One of the followers of Lucifer, bishop of Cagliari, in the fourth century, who separated from the orthodox churches because they would not go as far as he did in opposing the Arians.