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narrowband

adjective

nar·​row·​band ˈner-(ˌ)ō-ˌband How to pronounce narrowband (audio)
ˈna-(ˌ)rō-
: operating at, responsive to, or including a narrow range of frequencies

Word History

First Known Use

1948, in the meaning defined above

Time Traveler
The first known use of narrowband was in 1948

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