D0133100 (dĭ-nŏm′ə-nā′shə-nə-lĭz′əm)n.1. The tendency to separate into religious denominations.2. Advocacy of separation into religious denominations.3. Strict adherence to a denomination; sectarianism.de·nom′i·na′tion·al·ist n. & adj.ThesaurusSeedenominationalism