Definition of dominion noun from the Oxford Advanced American Dictionary

     

    dominion

     noun
    noun
    NAmE//dəˈmɪnyən//
     
     
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  1. 1[uncountable] dominion (over somebody/something) (literary) authority to rule; control Man has dominion over the natural world. Soon the whole country was under his sole dominion.
  2. 2[countable] (formal) an area controlled by one ruler the vast dominions of the Roman Empire
  3. 3Dominion [countable] (in the past) any of the countries of the British Commonwealth that had their own government compare colony, protectorate
See the Oxford Advanced Learner's Dictionary entry: dominion