presbyterianism noun1 •That form of church government which invests presbyters with all spiritual power, and admits no prelates over them; also, the faith and polity of the Presbyterian churches, taken collectively.
Presbyterianism UK /ˌpɹɛz.bɪˈtɪə.ɹɪə.nɪ.zəm/US /ˌpɹɛz.bɪˈtɪɹ.iə.nɪ.zəm/ noun2 •A form of Protestant Christianity based on Calvinism. •A form of Christian church government characterized by rule by bodies of presbyters or elders.