broad ‧ band /ˈbrɔːdbænd $ ˈbrɒːd-/ BrE AmE noun [uncountable]
1 . technical a system of sending radio signals, that allows several messages to be sent at the same time
2 . a system of connecting computers to the Internet and moving information, such as messages or pictures, at a very high speed
—broadband adjective [only before noun] :
broadband communications