verb (used with object)

  1. to remove or retire (a ship, airplane, etc.) from active service.
  2. to deactivate; shut down: to decommission a nuclear power plant.


  1. (tr) to dismantle or remove from service (a nuclear reactor, weapon, ship, etc which is no longer required)

1922, originally with reference to warships, from de- + commission (v.). Related: Decommissioned; decommissioning.

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