radial velocity

noun

Definition of radial velocity

1 : the component of velocity of a particle in the direction of its radius vector
2 or radial motion : the velocity of relative approach or recession of an observer and a celestial body or other sources of radiation in the line connecting the two : speed in the line of sight

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Cite this Entry

“Radial velocity.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/radial%20velocity. Accessed 7 Mar. 2021.

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