See also: gso English Noun GSO (plural GSOs) Abbreviation of geosynchronous orbit. Coordinate terms LEO (low Earth orbit) MEO (medium Earth orbit) HEO (high Earth orbit) NGSO (non-geostationary orbit) NGEO (non-geostationary Earth orbit) Related terms GTO (geostationary transfer orbit) GEO (geostationary orbit) Anagrams 'ogs, GOS, GoS, O.G.s, OGs, SOG, ogs, sog Wikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads