radial motion

[ rey-dee-uhl moh-shuhn ]

  1. 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.

Origin of radial motion

First recorded in 1880–85
  • Also called ra·di·al ve·loc·i·ty [rey-dee-uhl vuh-los-i-tee] /ˈreɪ di əl vəˈlɒs ɪ ti/ .

Words Nearby radial motion

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use radial motion in a sentence