polemic
po.lem.ic or po.lem.i.cal \p*-'lem-ik\ \-i-k*l\ \-k(*-)le-\ \-'lem-*-s*st\ n [F pole`mique, fr. MF, fr. polemique controversial, fr. Gk pole]mikos warlike, hostile, fr. polemos war; akin to OE ealfelo baleful, Gk pallein to brandish 1a: an aggressive attack on or refutation of the opinions or principles of another 1b: the art or practice of disputation or controversy - usu. used in pl. but sing. or pl. in constr. 2: an aggressive controversialist : DISPUTANT pl but sing or pl in constr 3: the branch of Christian theology devoted to the refutation of errors - polemic aj
Webster's English Dictionary