broadband

[brawd-band] Telecommunications.
adjective
1.
of, pertaining to, or responsive to a continuous, wide range of frequencies. Compare sharp ( def 23 ).
2.
pertaining to or denoting a type of high-speed data transmission in which the bandwidth is shared by more than one simultaneous signal.
noun
3.
broadband transmission.

Origin:
1900–05; broad + band2

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
broadband (ˈbrɔːdˌbænd)
 
n
See also baseband a transmission technique using a wide range of frequencies that enables messages to be sent simultaneously, used in fast internet connections

Collins English Dictionary - Complete & Unabridged 10th Edition
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Dictionary.com's 21st Century Lexicon
Main Entry:  broadband
Part of Speech:  n
Definition:  See narrowband
Dictionary.com's 21st Century Lexicon
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Etymonline
Word Origin & History

broadband
type of high-speed Internet access widely available from 2006, from broad + band.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Cultural Dictionary

broadband definition


In communications technology, the ability to send many signals over a single cable or other such communication medium. Broadband technology allows enormous amounts of data, such as that for movie videos, to be transferred over limited information infrastructure.

The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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FOLDOC
Computing Dictionary

broadband definition

communications
A class of communication channel capable of supporting a wide range of frequencies, typically from audio up to video frequencies. A broadband channel can carry multiple signals by dividing the total capacity into multiple, independent bandwidth channels, where each channel operates only on a specific range of frequencies.
The term has come to be used for any kind of Internet connection with a download speed of more than 56 kbps, usually some kind of Digital Subscriber Line, e.g. ADSL. A broadband connection is typically always connected, in contrast to a dial-up connection, and a fixed monthly rate is charged, often with a cap on the total amount of data that can be transferred. Domestic broadband connections typically share a telephone line with normal voice calls and the two uses can occur simultaneously without interference.
See also baseband, narrowband.
(2006-03-30)

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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Example sentences
Broadband is everywhere and you might use a tablet or a laptop to surf the web.
We will improve the speed at which data travels in space every-so-slightly
  faster than the previous generation of broadband.
And kids on college campuses have instant access to super-high-speed broadband.
It usually takes less than a minute for someone with a broadband connection to
  download an hourlong program.
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