
Downrange is the horizontal distance traveled by a spacecraft, or the spacecraft`s horizontal distance from the launch site. More often, it is used as an adverb or adjective specifying the direction of that travel being measured in a horizontal direction. In military slang, downrange is a term for being deployed overseas, usually in a war zone. I....
Found on
http://en.wikipedia.org/wiki/Downrange

The horizontal distance covered by a launch vehicle or missile, with respect to the Earth's surface, after launch and before entering orbit.
Found on
http://www.daviddarling.info/encyclopedia/D/downrange.html

being in the designated path from a launch pad to the point on a course generally taken as the target: The signal was picked up by a downrange radar station.
Found on
https://www.infoplease.com/dictionary/downrange
No exact match found.