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planet gear

noun

Machinery.

  1. any of the gears in an epicyclic train surrounding and engaging with the sun gear.

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Word History and Origins

Origin of planet gear1

First recorded in 1915–20
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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Find that Earth-sized planet, gear up our best technology, and sniff for a spectral biosignature.

Read more on Scientific American

You can also watch his Planet Gear music video here.

Read more on The Guardian

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planetesimal hypothesisplanetoid

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