Definition of "comsat"

Once a comsat is built, its traffic-handling capacity can be utilized […]

1967, Arthur Charles Clarke, The Coming of the Space Age

[…] educating farmers and schoolchildren, according to the social scientists studying it, are sufficient reasons in themselves to purchase a comsat.

1977, New Scientist

The suborbital, though, had a direct feed to a comsat, and the channel ought to be secure.

1998, Ian Douglas, Semper Mars