What does "christendom" mean?

Christendom: The name received at baptism; or, more generally, any name or appelation. [Obs.] Pretty, fond, adoptious christendoms. Shak.

Additional senses

  1. 2.That portion of the world in which Christianity prevails, or which is governed under Christian institutions, in distinction from heathen or Mohammedan lands. The Arian doctrine which then divided Christendom. Milton A wide and still widening Christendom. Coleridge.
  2. 3.The whole body of Christians. Hooker.

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