schismaticus

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.

schismătĭcus, i, m., = σχισματικός,

a separatist , seceder , schismatic (eccl. Lat.): schismaticos non fides diversa facit, sed communionis disrupta societas, Aug. Quaest. in Matt. 11.