Eastern Roman Empire
noun
the eastern part of the Roman Empire, especially after the division in a.d. 395, having its capital at Constantinople: survived the fall of the Western Roman Empire in a.d. 476.
Also called
Eastern Empire.
Compare
Byzantine Empire.
British Dictionary definitions for eastern empire
Eastern Roman Empire
noun
the eastern of the two empires created by the division of the Roman Empire in 395 ad
See also Byzantine Empire