Source : Webster's Revised Unabridged Dictionary (1913)

Dogmatist \Dog"ma*tist\, n. [L. dogmatistes, Gr. ?, fr. ?.]
   One who dogmatizes; one who speaks dogmatically; a bold and
   arrogant advancer of principles.

         I expect but little success of all this upon the
         dogmatist; his opinioned assurance is paramount to
         argument.                                -- Glanvill.

Source : WordNet®

dogmatist
     n : a stubborn person of arbitrary or arrogant opinions [syn: {doctrinaire}]