noun
: any of three coordinates in space two being obtained by constructing in a plane a polar coordinate system and the third being the angle between this plane and a fixed plane containing the polar axis
noun
: any of three coordinates in space two being obtained by constructing in a plane a polar coordinate system and the third being the angle between this plane and a fixed plane containing the polar axis
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012