Mith·ri·da·tes VI 
(mĭth′rĭ-dātēz) Known as "Mithridates the Great." 132?-63 BC.
(mĭth′rĭ-dātēz) Known as "Mithridates the Great." 132?-63 BC. King of Pontus (120-63) who expanded the kingdom through victories over the Romans during the early part of his reign but was later driven from Pontus by Pompey (66).