/ Thesaurus / R Synonyms of radius vector Find synonyms for: Noun1. radius vector, vectorusage: a line connecting a satellite to the center of the body around which it is rotating2. radius vector, vectorusage: a line connecting a point in space to the origin of a polar coordinate systemWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: abominable Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language