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commonwealth  - definition and synonyms

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noun commonwealth pronunciation in American English /ˈkɑmənˌwelθ/
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singularcommonwealth
pluralcommonwealths
  1. 2
    [singular] used as a part of the official name of the states of Kentucky, Massachusetts, Pennsylvania, and Virginia in the U.S.

    the Commonwealth of Virginia

  2. 3
    [countable] a part of the U.S. that is not a state and has its own government, for example, Puerto Rico or the Northern Mariana Islands

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