(astronomy, meteorology) an upper atmospheric optical phenomena associated with thunderstorms, a carrot-shaped red sprite that propagates upward from the core of an oceanic thunderstorm

(computing) one thousand million baud

A unit equal to 10⁹ gauss. Symbol: GG

plural of gigacity

A city even larger in scale than a megacity.

plural of gigahertz

plural of gigafactory

(slang) A very large manufacturing facility. / (slang) A factory producing electric batteries at a large scale.

(of a frequency) Below one gigahertz.

plural of gigadalton