Definition
The angular drawing together of the GEOGRAPHIC MERIDIANS in passing from the EQUATOR to the POLES. The difference between the two angles formed by the intersection of a GREAT CIRCLE with two MERIDIANS. The difference between the RECIPROCAL BEARINGS of two points. At any point of a cartographic PROJECTION, the angle between the MERIDIAN, as represented on the plane of the PROJECTION and GRID in use, and the GRID NORTH line.