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radius vector


Definition of radius vector

  1. 1 a :  the line segment or its length from a fixed point to a variable point b :  the linear polar coordinate of a variable point

  2. 2 :  a straight line joining the center of an attracting body (as the sun) with that of a body (as a planet) in orbit around it

Circa 1753

First Known Use of radius vector

circa 1753

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