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bandwidth

UK/ˈbændwɪdθ/US/ˈbændwɪdθ/
nounB2+3 meaningsOccasional — familiar, but not everyday · #10,603 of 15,258mostly written

Other forms: bandwidths

Bandwidth is how much data your connection can carry at once — the width of the pipe, not the speed of the water in it. Four people streaming films in one flat and the picture goes blocky: that is bandwidth running out.

It is measured in megabits per second, and it is not the same thing as latency, which is the wait before anything arrives — a satellite link has wide bandwidth and still feels slow. The older technical sense belongs to radio and physics: bandwidth is the range of frequencies a signal takes up, the slice of the dial a station gets. Offices then borrowed it for people, and I have no bandwidth this week means no time and no attention left — easy work talk, out of place in a formal letter. You will meet high bandwidth, limited bandwidth, and bandwidth-hungry for anything that eats it, video most of all. The noun is uncountable: bandwidth is expensive, never a bandwidth.

Jhbdel (talk) · Public domain

Definitions of bandwidth

  1. 1nounbandwidthThe amount of data a connection can carry in a given time.B2+

    “The office upgraded its line because the old one had no bandwidth for video calls.”

  2. 2nounrangeThe range of frequencies that a signal occupies.C1

    “The channel is narrow, so the bandwidth available to each station is small.”

  3. 3nounmentalThe time and mental energy a person has available.B2

    “I would love to help, but I have no bandwidth until Friday.”

bandwidth is a measure of capacity.

Where it comes from

Bandwidth is a plain compound of band and width: a band of frequencies, and how wide that band is. Everything the word does now — networks, radio, and the tired office complaint about having none — is that same picture of a strip with a measurable width.

From band + width.

Etymology from Wiktionary, CC BY-SA

Practised in Technology & Internet, Office & Admin, Computing & Code

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