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.
Definition of ego for English Language Learners. : 1  the opinion that you have about yourself. 2  psychology : a part of the mind that senses and adapts to the real world.