Definition of Christendom noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈkrɪsndəm//
; NAmE NAmE//ˈkrɪsndəm//
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all the Christian people and countries of the world Word Origin Old English crīstendōm, from crīsten ‘Christian’, (from Latin Christianus, from Christus ‘Christ’) + -dōm (originally meaning ‘decree, judgement’).
See the Oxford Advanced American Dictionary entry: Christendom