[adjective doun-reynj; adverb doun-reynj]
adjective, adverb Rocketry.
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.
Origin of downrange
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
in the direction of the intended flight path of a rocket or missile
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