tangential motion

[ tan-jen-shuhl moh-shuhn ]
/ tænˈdʒɛn ʃəl ˈmoʊ ʃən /

noun Astronomy.

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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Also called tan·gen·tial ve·loc·i·ty. [tan-jen-shuhl vuh-los-i-tee] /tænˈdʒɛn ʃəl vəˈlɒs ɪ ti/

Origin of tangential motion

First recorded in 1760–70
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020