giga-


  1. a combining form meaning “billion,” used in the formation of compound words: gigabyte.

combining form

  1. denoting 10 9gigavolt Symbol: G
  2. (in computer technology) denoting 2 30gigabyte

arbitrary word-forming element meaning “billion” in the metric system, 1947, from Greek gigas “giant” (see giant).

pref.

  1. One billion (109):gigahertz.

  1. A prefix that means:
  2. One billion (109), as in gigahertz, one billion hertz.
  3. 230 (that is, 1,073,741,824), which is the power of 2 closest to a billion, as in gigabyte.

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