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.
In psychoanalytic theory, the ego is the conscious division of personality that attempts to mediate between the demands of the id, the superego, and reality. (p. 598)