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tangential motion

[ tan-jen-shuhl moh-shuhn ]

noun

, Astronomy.
  1. the component of the linear motion of a star with respect to the sun, measured along a line perpendicular to its line of sight and expressed in miles or kilometers per second.

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Word History and Origins

Origin of tangential motion1

First recorded in 1760–70

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Example Sentences

This experiment shows that no cyclone can form without some tangential motion in the air entering the area of low-pressure.

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tangentiallytangent line

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