The DICT Development Group
2 definitions found
for Radius vector
From The Collaborative International Dictionary of English v.0.48 :
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 coordinates. See Coordinate, n.
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.
From WordNet (r) 3.0 (2006) :
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
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