gigabyte

[gig-uh-bahyt, jig-]
noun Computers.
a measure of storage capacity equal to 2 30 (1024) bytes.

Origin:
giga- + byte

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World English Dictionary
gigabyte (ˈɡɪɡəˌbaɪt, ˈɡaɪɡəˌbaɪt)
 
n
computing See also giga- one thousand and twenty-four megabytes

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
gigabyte   (gĭg'ə-bīt')  Pronunciation Key 
  1. A unit of computer memory or data storage capacity equal to 1,024 megabytes (230 bytes).

  2. One billion bytes. See Note at megabyte.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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FOLDOC
Computing Dictionary

gigabyte definition

unit
2^30 = 1,073,741,824 bytes = 1024 megabytes.
Roughly the amount of data required to encode a human gene sequence (including all the redundant codons).
See prefix.
(1995-09-29)

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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Example sentences
These convenient storage devices will hold up to one gigabyte of files, and that's a lot of holiday photos and mp3 files.
For comparison, the human genome is less than a gigabyte in size.
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