Ku-band Syllabification: (Ku-band)Pronunciation: /ˈkāˈyo͞o ˌband/Definition of Ku-band noun a microwave frequency band used for satellite communication and broadcasting, using frequencies of about 12 gigahertz for terrestrial reception and 14 gigahertz for transmission. Origin: 1990s: from Ku (arbitrary serial designation) + bandKu-band in other Oxford dictionaries Definition of Ku-band in the British & World English dictionary