Source : Webster's Revised Unabridged Dictionary (1913)

Dogmatize \Dog"ma*tize\, v. t.
   To deliver as a dogma. [R.]

Dogmatize \Dog"ma*tize\, v. i. [imp. & p. p. {Dogmatized}; p.
   pr. & vb. n. {Dogmatizing}.] [L. dogmatizare to lay down an
   opinion, Gr. ?, fr. ?: cf. F. dogmatiser. See {Dogma}.]
   To assert positively; to teach magisterially or with bold and
   undue confidence; to advance with arrogance.

         The pride of dogmatizing schools.        --Blackmore.

Source : WordNet®

dogmatize
     v 1: state as a dogma [syn: {dogmatise}]
     2: speak dogmatically [syn: {dogmatise}]