(of an artificial satellite of the earth) Moving in a geosynchronous orbit in the plane of the equator, so that it remains stationary in relation to a fixed point on the surface. This orbit is achieved at an altitude of 22,300 miles (35,900 km.) above the earth. It is used by communication and meteorological satellites
of or pertaining to a satellite that travels about the earth's equator at an altitude of at least 35,000 kilometers at a speed matching that of the earth's rotation, thus maintaining a constant relation to points on the earth [adj]