What is the meaning of Giga-?

In the International System of Units and other metric systems of units, multiplying the unit to which it is attached by 10 (short scale billion or long scale milliard). Symbol: G

Multiplying the unit to which it is attached by 2 or 1,073,741,824.

Augmenting an adjective; intensely, extremely, or to an exceptionally high degree.

Used to augment nouns; denoting an invididual who is a paragon of something.

giga-

giga-

giga-

super-, extremely

giga-

giga-

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giga-, bilion

giga- (SI prefix multiplying the unit by 10)

Source: wiktionary.org