noun
: either of two numbers that locate a point in a plane by its distance from a fixed point along a line to the point and the angle this line makes with a fixed line
noun
: either of two numbers that locate a point in a plane by its distance from a fixed point along a line to the point and the angle this line makes with a fixed line
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012