Found 2 items, similar to radius vector.
English → English (WordNet) Definition: radius vector radius vector n 1: a line connecting a satellite to the center of the body around which it is rotating 2: a line connecting a point in space to the origin of a polar coordinate system
English → English (gcide) Definition: Radius vector Radius vector \Ra"di*us vec"tor\ (v[e^]k"t[o^]r). 1. (Math.) A straight line (or the length of such line) connecting any point, as of a curve, with a fixed point, or pole, round which the straight line turns, and to which it serves to refer the successive points of a curve, in a system of polar co["o]rdinates. See Co["o]rdinate, n. [1913 Webster] 2. (Astron.) 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. [1913 Webster]