i Register
In some senses, ecumene is marked as archaic. Watch for register when choosing this word.
noun
All known inhabited and civilized areas of the world.
Near-synonym: civilization
Ninety-five per cent of the cultivated area of the country lies east of a line drawn from Tsitsihar (Ch'i-ch'i-ha-erh) in northern Manchuria to K'un-ming in Yün-nan Province. This is eastern China, and within it is the Chinese ecumene.
Unification of Christianity and of Christendom.