Source : Webster's Revised Unabridged Dictionary (1913)

Denominationalism \De*nom`i*na"tion*al*ism\, n.
   A denominational or class spirit or policy; devotion to the
   interests of a sect or denomination.

Source : WordNet®

denominationalism
     n 1: a narrow-minded adherence to a particular sect or party or
          denomination; "he condemned religious sectarianism"
          [syn: {sectarianism}]
     2: the tendency, in Protestantism, to separate into religious
        denominations or to advocate such separations