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.
Meaning: Having a common center. Synonyms: concentric; concentrical; homocentric. Context example: concentric rings. Similar: coaxal; coaxial (having a common axis)