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radial motion

[ rey-dee-uhl moh-shuhn ]
/ ˈreɪ di əl ˈmoʊ ʃən /
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noun Astronomy.
the component of the motion of a star away from or toward the earth along its line of sight, expressed in miles or kilometers per second and determined by the shift in the wavelength of light emitted by the star.
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Also called ra·di·al ve·loc·i·ty [rey-dee-uhl vuh-los-i-tee] /ˈreɪ di əl vəˈlɒs ɪ ti/ .
Compare redshift, tangential motion.

Origin of radial motion

First recorded in 1880–85

Words nearby radial motion

radial, radial artery , radial drilling machine, radial engine, radial keratotomy, radial motion, radial paralysis, radial-ply, radial saw, radial symmetry, radial tire
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

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