What does GEOS stand for?

What does GEOS mean?

GEOS	General Earthquake Observation System Academic & Science » Geology
GEOS	Grupo Ecológico de Organización y Solidaridad International » Guatemalan
GEOS	Global Episode Opinion Summary Community » Media
GEOS	Global Entity Online System Governmental » Military
GEOS	Geodynamics Experimental Ocean Satellite Academic & Science » Ocean Science
GEOS	Geosynchronous Earth Orbit Satellite Academic & Science » Physics
GEOS	Graphical Environment Operating System Computing » Software
GEOS	Genetic Engineering Operating System Computing » Software
GEOS	Geometry Engine Open Source Computing » Software
GEOS	Global Educational Opportunities And Services Academic & Science » Universities