DEFINITIONS

radial motion

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.

Content related to radial motion

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Words nearby radial motion

radial extensor muscle of wrist, radial flexor muscle of wrist, radial growth phase, radial index artery, radial keratotomy, radial motion, radial nerve, radial paralysis, radial saw, radial symmetry, radial tire
Compare redshift, tangential motion.
Also called radial velocity.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for radial velocity

radial velocity

noun

the component of the velocity of an object, esp a celestial body, directed along a line from the observer to the object
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012