'Sectarist' definitions:

Definition of 'sectarist'

From: WordNet
noun
A member of a sect; "most sectarians are intolerant of the views of any other sect" [syn: sectarian, sectary, sectarist]

Definition of 'Sectarist'

From: GCIDE
  • Sectarist \Sec"ta*rist\, n. A sectary. [R.] --T. Warton. [1913 Webster]