- The profession of faith in Christ by baptism; hence,
the Christian religion, or the adoption of it. - The name received at baptism; or, more generally, any
name or appelation. - That portion of the world in which Christianity
prevails, or which is governed under Christian institutions, in
distinction from heathen or Mohammedan lands. - The whole body of Christians.
Meaning of 'christendom' (Princeton's WordNet)
1 . christendom
[ n]
Meaning (1): - the collective body of Christians throughout the world and history (found predominantly in Europe and the Americas and Australia)
Example in sentence:
for a thousand years the Roman Catholic Church was the principal church of Christendom