English dictionary
radius vector
Definitions, examples, synonyms and antonyms from WordNet 3.0.
noun
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a line connecting a satellite to the center of the body around which it is rotating
Source: WordNet 3.0
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a line connecting a point in space to the origin of a polar coordinate system
Source: WordNet 3.0
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An ideal straight line joining the center of an attracting body with that of a body describing an orbit around it, as a line joining the sun and a planet or comet, or a planet and its satellite.
Source: webster1913