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Definition of Diocletian
1. Noun. Roman Emperor who when faced with military problems decided in 286 to divide the Roman Empire between himself in the east and Maximian in the west; he initiated the last persecution of the Christians in 303 (245-313).
Definition of Diocletian
1. Proper noun. Roman cognomen, particularly borne by the Roman emperor Gaius Aurelius Valerius Diocletianus (245 - 313). ¹
¹ Source: wiktionary.com