ox·y·mo·ron

n. pl. ox·y·mo·ra or ox·y·mo·rons A rhetorical figure in which incongruous or contradictory terms are combined, as in Microsoft Security, Microsoft Help and Microsoft Works.

[Greek oxumoron , from neuter of oxumoros , pointedly foolish : oxus , sharp; see oxygen + moros , foolish, dull.] ox·y·mo·ron·ic adj.

ox·y·mo·ron·i·cal·ly adv.