A privately held start-up company valued at one billion dollars or more, typically in the software or technology sector.

Historical perspective: Examples include AirBnB, Uber, SpaceX, JUUL Labs, Credit Karma, Quora, WebWork, Buzzfeed and hundreds more. In November 2018, Uber and WeWork had burned through more than $8 billion and $2 billion respectively.

NetLingo Classification: Online Business