noun
Usage: usually capitalized X
: a segment of the superhigh-frequency radio spectrum that lies between 5.2 GHz and 10.9 GHz and is used especially for radars and for spacecraft communication
noun
Usage: usually capitalized X
: a segment of the superhigh-frequency radio spectrum that lies between 5.2 GHz and 10.9 GHz and is used especially for radars and for spacecraft communication
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012