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[gig-uh-bahyt, jig-] /ˈgɪg əˌbaɪt, ˈdʒɪg-/

noun, Computers.
a measure of storage capacity equal to 2 30 (1024) .
/ˈɡɪɡəˌbaɪt; ˈɡaɪɡəˌbaɪt/
(computing) one thousand and twenty-four megabytes See also giga- (sense 2)

1982, from giga- + byte.

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.


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  • Gigaflop

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