2 definitions found From WordNet (r) 2.0 [wn]: Justinian noun: Byzantine emperor who held the eastern frontier of his empire against the Persians; codified Roman Law in 529; his general Belisarius regained North Africa and Spain (483-565) [syn: {Justinian I}, {Justinian the Great}] From The Collaborative International Dictionary of English v.0.44 [gcide]: Justinian \Jus*tin"i*an\, adjective Of or pertaining to the Institutes or laws of the Roman Justinian.

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