giga-

1.
a combining form meaning “billion,” used in the formation of compound words:
gigabyte.
Origin
< Greek gígās giant
British Dictionary definitions for giga-

giga-

/ˈɡɪɡə; ˈɡaɪɡə/
combining form
1.
denoting 109: gigavolt, G
2.
(in computer technology) denoting 230: gigabyte
Word Origin
from Greek gigasgiant
Word Origin and History for giga-

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

giga- in Medicine

giga- pref.
One billion (109): gigahertz.

giga- in Science
giga-  

  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.


giga- in Technology


prefix