radius vector radius rod • radix · · · Info · Definitions · Characters · · radius vector · · Text Common · · Latin · · Scripts 13 · · Length 5 · · Syllables Definitions · · · (noun) a line connecting a satellite to the center of the body around which it is rotating. Synonyms: radius vector. · · Noun Definition 1 (noun) a line connecting a point in space to the origin of a polar coordinate system. Synonyms: radius vector. · · Noun Definition 2 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 d latin small letter d U+0064 e latin small letter e U+0065 i latin small letter i U+0069 o latin small letter o U+006F r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075 v latin small letter v U+0076