radius vector plural
ra·di·us vec·tor
The plural form of radius vector is radii vecˈtores
R rDefinitions
- noun plural radius vector Mathematics. the length of the line segment joining a fixed point or origin to a given point. 1
- noun plural radius vector Astronomy. 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. 1