Definition of broadband
1
: operating at, responsive to, or comprising a wide band of frequencies
a broadband radio antenna
2
: of, relating to, or being a high-speed communications network and especially one in which a frequency range is divided into multiple independent channels for simultaneous transmission of signals (such as voice, data, or video)
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Merriam-Webster unabridged
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Time Traveler for broadband
The first known use of broadband was in 1929
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