- noun a length of metal running down the outside wall of a building to the ground, which acts as a channel for the electric current when lightning strikes the building
- A system consisting of a lightning rod, a conductor capable of withstanding the current of a lightning discharge, and a ground rod. A lightning conductor does not prevent the occurrence of a lightning discharge, but when properly designed helps ensure that the energy released is safely channeled into the earth. Also called lightning rod.
- The conductor utilized in a lightning conductor (1).
- synonym lightning rod
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