'gigabyte' definitions:

Definition of 'gigabyte'

From: WordNet
noun
A unit of information equal to 1000 megabytes or 10^9 (1,000,000,000) bytes [syn: gigabyte, G, GB]
noun
A unit of information equal to 1024 mebibytes or 2^30 (1,073,741,824) bytes [syn: gigabyte, gibibyte, G, GB, GiB]