giga-

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giga- (symbol: G) A prefix indicating a multiple of one billion, 109, as in gigahertz and gigavolt. When the binary number system is used in a structure or process (as in semiconductor RAM or ROM) the prefix then indicates a multiple of 230, i.e. 1 073 741 824,

as in gigabyte and gigabit. The context usually clarifies which meaning is intended, although, being quite close numerically, the meanings are often considered more or less equivalent.

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giga- • comb. form used in units of measurement: 1. denoting a factor of 109: gigahertz. 2. Comput. denoting a factor of 230.

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giga- (pronounced ‘jigga’) From the Greek gigas meaning ‘giant’, a prefix (symbol G) attached to SI units, meaning the unit × 109 (e.g. 2 Gm = 2 gigametres = 2 × 109 m).

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giga- from the Greek gigas meaning ‘giant’, a prefix (symbol G) attached to SI units, meaning the unit ×109 (e.g. 2Gm = 2 gigametres = 2 ×109m).

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giga- Symbol G. A prefix used in the metric system to denote one thousand million times. For example, 109 joules = 1 gigajoule (GJ).

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