The Collaborative International Dictionary of English v.0.48:

Terminist \Ter"mi*nist\, n. [Cf. F. terministe.] (Theol.)
   One of a class of theologians who maintain that God has fixed
   a certain term for the probation of individual persons,
   during which period, and no longer, they have the offer to
   grace. --Murdock.
   [1913 Webster]