Noun
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.
Source: Webster's dictionaryThe best chess-player in Christendom may be little more than the best player of chess but proficiency in whist implies capacity for success in all these more important undertakings where mind struggles with mind. Edgar Allan Poe
Radical Islam has been the foe of Christendom for centuries. Tom Tancredo
Holy Christendom has, in my judgment, no better teacher after the apostles than St. Augustine. Martin Luther
The Mass is the greatest blasphemy of God, and the highest idolatry upon earth, an abomination the like of which has never been in Christendom since the time of the Apostles. Martin Luther
There is no social life outside of Christendom. William H. Seward
This is indeed a clash of civilisations, not between Islam and Christendom but between reason and superstition. Polly Toynbee