reduction gear


: a combination of gears used to reduce the input speed (as of a marine turbine) to a lower output speed (as of a ship's propeller)

Examples of reduction gear in a Sentence

Recent Examples on the Web So instead, the CV joint, driveshaft, and reduction gear all move into a new unit mounted in the wheel. Jonathan M. Gitlin, Ars Technica, 1 Dec. 2023 Their legs are rigid, powered by motors coupled to reduction gears. IEEE Spectrum, 13 Dec. 2010 The motor and reduction gears—required to propel the machine—take up a lot of usable space, which forces manufacturers that use traditional electric power trains to rely on high-energy-density cells in order to achieve good range and performance. Rennie Scaysbrook, Robb Report, 24 May 2023 The helical teeth in the reduction gears have also been micro-polished to reduce their friction. Csaba Csere, Car and Driver, 5 Apr. 2023 Power comes from a single motor that drives the rear axle through a reduction gear and a limited-slip differential. Mike Duff, Car and Driver, 1 Sep. 2020 Collectively, these 200-blade rotors—each molded from a single piece of carbon fiber and each fitted with its own combustor, turbine, and reduction gear—would generate in excess of 130,000 pounds of thrust. David W. Freeman, Popular Mechanics, 20 May 2021 The expanding gases would spin a turbine linked to the fan by a reduction gear, producing 24,000 pounds of thrust per side. David W. Freeman, Popular Mechanics, 20 May 2021 These electric vehicles will have simple, single-speed reduction gears. Jamie L. Lareau, Detroit Free Press, 19 Nov. 2019

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'reduction gear.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1883, in the meaning defined above

Time Traveler
The first known use of reduction gear was in 1883

Dictionary Entries Near reduction gear

Cite this Entry

“Reduction gear.” Dictionary, Merriam-Webster, Accessed 25 Apr. 2024.

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