Source : Webster's Revised Unabridged Dictionary (1913)

Justinian \Jus*tin"i*an\, a.
   Of or pertaining to the Institutes or laws of the Roman
   Justinian.

Source : WordNet®

Justinian
     n : 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}]