geostationary

definition: 
(Of an artificial satellite of the earth) moving in a circular geosynchronous orbit in the plane of the equator, so that it appears to be stationary in the sky above a fixed point on the surface.
sentence: 
Three special satellites located in geostationary orbit above Europe transmit a GPS-like signal that improves the GPS accuracy down to 1 to 2 metres.
difficulty: 
easy
toefl frequency: 
1
toefl classification: