Definitions:

1. a unit of information equal to 1000 megabytes, or 1,000,000,000 bytes noun
   • My new camera can store a gigabyte of photos.
2. a unit of information equal to 1024 mebibytes or 2^30 i.e. 1,073,741,824 bytes noun
   • My laptop has many gigabytes of storage.

Synonyms:

• gibibyte