/jee'oh stay"sheuh ner'ee/ , adj.
of or pertaining to a satellite traveling in an orbit 22,300 miles (35,900 km) above the earth's equator: at this altitude, the satellite's period of rotation, 24 hours, matches the earth's and the satellite always remains in the same spot over the earth: geostationary orbit.
Also, geosynchronous /jee'oh sing"kreuh neuhs/ .
[ 1960-65; GEO- + STATIONARY ]