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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Dictionary Entries near rotor disk

rotor

rotor blade

rotorcraft

rotor disk

rotor plane

rotor ship

Rotorua

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The first known use of rotor disk was in 1931

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