Origin of giga-from Classical Greek gigas, giant
- One billion (109): gigahertz.
- 1,073,741,824 (230): gigabyte.
Origin of giga-From Greek gigās giant
- 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.
In computing, meaning is ambiguous between 109 = 1,000,000,000 and 230 = 1,073,741,824. For precision, gibi- specifically means the binary 230; see binary prefix for discussion.
From Ancient Greek γίγας (gigas, “giant”); cognate to giant.
giga- - Computer Definition
(1) Billion (10 to the 9th power). Abbreviated "G," it is a prefix for capacities and speeds (gigabits, gigabytes, gigahertz, etc.). Giga may refer to 1,000,000,000 or 1,073,741,824, the latter based on the binary system (see NIST binary). See GB, gig, binary values and space/time.
(2) A prefix attached to common, non-computer words that means a very large size or quantity. For example, "gigabucks" means a lot of money. Both "giga" and "mega" are used in this manner, although giga means billion and mega means million. See mega.