rotor disk

noun

Definition of rotor disk

: the plane circular area swept through by the blades of a helicopter rotor

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First Known Use of rotor disk

1931, in the meaning defined above

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The first known use of rotor disk was in 1931

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Cite this Entry

“Rotor disk.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/rotor%20disk. Accessed 24 January 2020.

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