giga-

Above mega, below tera

Giga- is a prefix meaning one billion (10⁹) in the metric system: a gigawatt is a billion watts, a gigabyte is a billion bytes.

In computing, the prefix has become shorthand for massive scale or capacity: My phone has 128 gigs of storage.

Informally shortened to gig in tech contexts.

prefix

gigapixel

Billion-element image resolution

gigapascal · tera- · mega- · peta- · kilo-

computing

gigaflops

Processing speed unit

RAM · storage · processing · memory · SSD · server · networking · throughput

slang

enormous

Extremely large in scale

  • massiveExtremely large and heavy
  • hugeExtremely large in size
  • epicImpressively grand in scope

extreme · over-the-top · meme · hyperbole · exaggeration · impressive · dominant · ultra

billion

milliard

One thousand million

decimal · multiplier

Opposites
metric scale magnitude

giga-nano-

Billionth prefix

pico- · micro- · milli- · centi- · deci-

informal size/intensity

giga-nano-

Billionth prefix

micro- · mini- · tiny · minuscule · small

Phrases
Family

gigantic, gigabyte, gigabytes, gigantism, gigabit, gigahertz, gigawatt, gigabits, gigawatts

Familiarity
Top 500,000
Profile
Known to kids · Used worldwide · Timeless · Abstract · Everyday, not technical · Rated G