# Definitions for **radius vector**vɛkˈtɔr iz, -ˈtoʊr-

### This page provides all possible meanings and translations of the word **radius vector**

### Random House Webster's College Dictionary

ra′dius vec′torvɛkˈtɔr iz, -ˈtoʊr-(n.)(pl.)radii vec•to•res; radius vectors.

Math. the length of the line segment joining a fixed point or origin to a given point.

**Category:**MathAstron. the straight line joining two bodies in relative orbital motion, as the line from the sun to a planet at any point in its orbit. the distance between two such bodies at any point in the orbit.

**Category:**Astronomy

#### Origin of **radius vector**:

1745–55

### Princeton's WordNet

radius vector(noun)

a line connecting a satellite to the center of the body around which it is rotating

radius vector(noun)

a line connecting a point in space to the origin of a polar coordinate system

### Webster Dictionary

Radius vector

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

Radius vector(noun)

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

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"radius vector." *Definitions.net.* STANDS4 LLC, 2014. Web. 31 Aug. 2014. <http://www.definitions.net/definition/radius vector>.