Definition: Meaning of, Gaius Aurelius Valerius Diocletian in English to English dictionary.
Pronunciation:/ ɔːˈriːlɪəs ˌdʌɪəˈkliːʃ(ə)n /
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245-313 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