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(1) Billion (10 to the 9th power). Abbreviated "G," it is a prefix for capacities and speeds (gigabits, gigabytes, gigahertz, etc.). Giga may refer to 1,000,000,000 or 1,073,741,824, the latter based on the binary system (see NIST binary). See GB, gig, binary values and space/time.

(2) A prefix attached to common, non-computer words that means a very large size or quantity. For example, "gigabucks" means a lot of money. Both "giga" and "mega" are used in this manner, although giga means billion and mega means million. See mega.
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giga (G)

A prefix meaning multiplied by 109.
An Illustrated Dictionary of Aviation Copyright © 2005 by The McGraw-Hill Companies, Inc. All rights reserved
References in periodicals archive ?
The agreement was signed by Muhammad Nasrullah, PTCL Senior Executive Vice President (SEVP) Business Zones and Yaqoob Mehanti, Director Projects Al Ghurair Giga Pakistan (Pvt) Ltd in the presence of Walid Irshaid, President and CEO PTCL and Haji Muhammd Rafiq Giga, Vice Chairman Al Ghurair Giga Pakistan (Pvt) Ltd.
"We are pleased to extend cooperation to Al Ghurair Giga for development of telecom infrastructure.
At an introductory rate of Dh60 a square foot, Giga Investment believes the cost is accessible enough for its intended audience.
Giga DSL is a next-generation access technology solution that is growing rapidly on both a regional and global level.
And Brady has said that his goal to reach giga or terapixels is currently being held back by the difficulty of designing a spherical lens that will not distort small areas of a scene.
"A system like this takes 4 gops (Giga Operations Per Second) of processing power," said Lind, "and will signal the need to assist the driver with his task." Like all active safety systems it will leave the ultimate responsibility in the driver's hands.--CAS
Also popular with teens is Giga.Hold, from Continental Consumer Products, which was singled out as a hot pick by Teen People TrendSpotters at the most recent National Association of Chain Drug Stores Marketplace Conference.
The company has recently taken delivery of two Dawsonrentals high capacity Giga Blast freezers on a long term rental basis, having previously hired smaller freezers to cover seasonal peaks.
Fraserburgh-based Scottish Fisherman's Harvest is using two Dawsonrentals Giga Blast freezers on a long-term rental basis, having previously hired smaller freezers to cover seasonal peaks.
The machine handles both MPEG-1 and MPEG-2 formats in addition to Sony's proprietary "Giga Pocket" files, and will also cope with AVI and WMA stuff.
According to a report by Giga Information Group (for a study that AMD commissioned, it should be noted), organizations can derive significant cost savings by gradually adding Opteron-based servers as software is transitioned to 64 bits.
NORDIC BUSINESS REPORT-15 April 2003-Martinsson acquires operations from Giga Consulting(C)1994-2003 M2 COMMUNICATIONS LTD