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gear ratio

noun, Machinery.
the ratio of the rotational speeds of the first and final gears in a train of gears or of any two meshing gears.
the ratio of the diameters of the pitch surfaces of any two meshing gears or of the numbers of their teeth.
Origin of gear ratio
First recorded in 1905-10 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for gear ratio
Historical Examples
  • The gear ratio is such that one turn of the handle will turn the chuck five or six revolutions.

    Aviation Engines

    Victor Wilfred Pag

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