control rod

noun
plural control rods

Definition of control rod

: a rod of a neutron-absorbing material (such as boron carbide) used to regulate the rate of nuclear fission in a reactor

First Known Use of control rod

1906, in the meaning defined above

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Time Traveler for control rod

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The first known use of control rod was in 1906

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Cite this Entry

“Control rod.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/control%20rod. Accessed 15 Jan. 2021.

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