Source : Webster's Revised Unabridged Dictionary (1913)

Polemic \Po*lem"ic\, a. [Gr. ? warlike, fr.? war: cf. F.
   pol['e]mique.]
   1. Of or pertaining to controversy; maintaining, or
      involving, controversy; controversial; disputative; as, a
      polemic discourse or essay; polemic theology.

   2. Engaged in, or addicted to, polemics, or to controversy;
      disputations; as, a polemic writer. --South.

Polemic \Po*lem"ic\, n.
   1. One who writes in support of one opinion, doctrine, or
      system, in opposition to another; one skilled in polemics;
      a controversialist; a disputant.

            The sarcasms and invectives of the young polemic.
                                                  --Macaulay.

   2. A polemic argument or controversy.

Source : WordNet®

polemic
     n 1: a writer who argues in opposition to others (especially in
          theology) [syn: {polemicist}, {polemist}]
     2: a controversy (especially over a belief or dogma)

polemic
     adj : of or involving dispute or controversy [syn: {polemical}]