A unit prefix denoting one billion (10^9).

Gigabyte: a unit of digital information storage capacity.

Gigawatt: a unit of power equal to one billion watts.

Gigahertz: a frequency measurement equivalent to one billion hertz.

Gigaflop- measure of computing speed in billions operations per second

Gigantic - extremely large or huge in size

Giggly - prone to laughing and being amused easily