Source : Webster's Revised Unabridged Dictionary (1913)

Predicant \Pred"i*cant\, a. [L. praedicans, -antis, p. pr. of
   praedicare. See {Predicate}.]
   Predicating; affirming; declaring; proclaiming; hence;
   preaching. ``The Roman predicant orders.'' --N. Brit. Rev.

Predicant \Pred"i*cant\, n.
   One who predicates, affirms, or proclaims; specifically, a
   preaching friar; a Dominican.