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  1. Oxford American Dictionary

    tractor beam

    • IPA[ˈtraktər bēm]
    • n.
      (in science fiction) a hypothetical beam of energy that can be used to move objects such as space ships or hold them stationary.

    • noun: tractor beam, plural noun: tractor beams

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    tractor beam

    • n.
      (in science fiction) a hypothetical beam of energy that can be used to move objects such as ...

    Oxford Dictionary