Radius vector

Definition of Radius vector

Ra´di`us vec´tor   Pronunciation: vĕk´tǒr
n.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 coördinates. See Coördinate, 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.

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Radiophare
Radiophone
Radiophony
Radiopticon
Radioscopy
Radiotelegram
Radiotelegraph
Radiotelegraphic
Radiotelegraphy
Radiotelephone
Radiotherapy
radiothorium
radious
Radish
Radish fly
Radium
Radius
Radius bar
Radius of curvature
Radius of gyration
-Radius vector-
Radix
Radon
Radula
Raduliform
Raff
Raff merchant
Raffaelesque
Raffia
Raffia palm
Raffinose
Raffish
Raffle
Raffler
Rafflesia
Raft
Raft bridge
Raft duck
Raft port
Rafte
Rafter
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