of or relating 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 ge·o·syn·chro·nous [jee-oh-sing-kruh-nuh s] /ˌdʒi oʊˈsɪŋ krə nəs/.
Origin of geostationary
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
(of a satellite) in a circular equatorial orbit in which it circles the earth once per sidereal day so that it appears stationary in relation to the earth's surfaceAlso: geosynchronous
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012