- a combining form meaning “billion,” used in the formation of compound words: gigabyte.
- denoting 10 9gigavolt Symbol: G
- (in computer technology) denoting 2 30gigabyte
arbitrary word-forming element meaning “billion” in the metric system, 1947, from Greek gigas “giant” (see giant).
- One billion (109):gigahertz.
- A prefix that means:
- One billion (109), as in gigahertz, one billion hertz.
- 230 (that is, 1,073,741,824), which is the power of 2 closest to a billion, as in gigabyte.