What usgs stand for and what do they do? The United States Geological Survey/service were and are the cartographers that converted early maps into the GPS location system known today. Edit
Medical Definition of EGOCENTRIC. 1. : limited in outlook or concern to one's own activities or needs.
geocentric. 1  having or representing the earth as a center: a geocentric theory of the universe. 2  using the earth or earthly life as the only basis of evaluation. 3  viewed or measured as from the center of the earth: the geocentric position of the moon.