1) Christian term 2) Schism in Christianity 
The Novatianists were early Christians following Antipope Novatian, held a strict view that refused readmission to communion of Lapsi, those baptized Christians who had denied their faith or performed the formalities of a ritual sacrifice to the pagan gods, under the pressures of the persecution sanctioned by Emperor Decius, in AD 250. They were d...
• (n.) The doctrines or principles of the Novatians. • (n.) The doctrines or principles of the Novatians.
No·va'tian·ism noun The doctrines or principles of the Novatians. Milner.