giga-

In the International System of Units and other metric systems of units, multiplying the unit to which it is attached by 10⁹ (short scale billion or long scale milliard).

giga- + watt → gigawatt ("one billion watts")

Multiplying the unit to which it is attached by 2³⁰ or 1,073,741,824.

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

Wow, I am giga-jealous right now.

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

giga- + Chad → gigachad

giga- + Stacy → gigastacy