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Christendom

American  
[kris-uhn-duhm] / ˈkrɪs ən dəm /

noun

  1. Christians collectively.

  2. the Christian world.

  3. Christianity.


Christendom British  
/ ˈkrɪsəndəm /

noun

  1. the collective body of Christians throughout the world or throughout history

  2. an obsolete word for Christianity

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of Christendom

before 900; Middle English; Old English cristendōm. See Christian, -dom

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Christendom, in the medieval world of the Crusades, was Europe against the Islamic world.

From Slate • Apr. 9, 2026

He was first buried in crypts under St. Peter's Basilica and moved in 2011 to a chapel on the main level of the largest church in Christendom.

From Reuters • Dec. 30, 2022

Some of these programs have tiny reach — Christendom Curriculum had 100 subscribers as of September.

From Washington Post • Dec. 23, 2022

The hulking mass of the Hagia Sophia, the sixth-century church that became the enduring symbol of Christendom, seemed like a basilica to me again, surrounded by a copse of slim, tapered minarets.

From New York Times • May 12, 2022

I was there, too—for whether these children conquered the dragon or, as was much more likely, died trying, I would not miss it for all of Christendom.

From "The Inquisitor's Tale" by Adam Gidwitz