Definition of dominion noun from the Oxford Advanced Learner's Dictionary

     

    dominion

     noun
    noun
    BrE BrE//dəˈmɪniən//
     
    ; NAmE NAmE//dəˈmɪniən//
     
     
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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. 3(also Dominion) [countable] (in the past) any of the countries of the British Commonwealth that had their own government compare colony, protectorate
  4. Word Origin Middle English: via Old French from medieval Latin dominio(n-), from Latin dominium, from dominus ‘lord, master’.
See the Oxford Advanced American Dictionary entry: dominion