Christendom

1 ENTRIES FOUND:
Christendom /ˈkrɪsn̩dəm/ noun
Christendom
/ˈkrɪsn̩dəm/
noun
Britannica Dictionary definition of CHRISTENDOM
[noncount]
1 
: people who are Christians
2 
: the part of the world where most people are Christians — sometimes used in the old-fashioned phrase in all of Christendom