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union

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noun British English pronunciation: union /ˈjuːnjən/ 
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singularunion
pluralunions
  1. 1
    [countable] an organization that represents the workers in a particular industry and tries to improve pay, conditions etc

    We encourage all employees to join a union.

    the National Union of Teachers

    government attempts to reduce the power of the unions

    1. a.
      [only before noun] belonging to or connected with a union

      union members/officials/representatives

  2. 4
    [singular/uncountable] the process of joining things or people together
    1. a.
      the state of being joined together
      union with:

      Their aim is closer political and economic union with Europe.

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