Noun
A denominational or class spirit or policy; devotion to the interests of a sect or denomination.
Source: Webster's dictionaryhe condemned religious sectarianism Source: Internet
The movement can be distinguished into Catholic and Protestant movements, with the latter characterised by a redefined ecclesiology of "denominationalism" (which the Catholic Church, among others, rejects). Source: Internet
Garrison and DeGroot (1948) page 245 Alexander Campbell had concerns that holding conventions would lead the movement into divisive denominationalism. Source: Internet