radius vector

noun

Definition of radius vector

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

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

1740

First Known Use of radius vector

1740


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