WordReference Random House Unabridged Dictionary of American English © 2020
cae•sa•ro•pap•ism  (sē′zə rō pāpiz əm),USA pronunciation n. 
  1. the possession of supreme authority over church and state by one person, often by a secular ruler.
  2. the supremacy of the state over the church in ecclesiastical matters.
cae′sa•ro•papist, n., adj. 
  • Caesar + -o- + papism 1885–90

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