Skip to definition.
Get the FREE one-click dictionary software for Windows or the iPhone/iPad and Android apps

Noun: jillion  jil-yun [N. Amer], ji-lee-un [Brit]
  1. A very large indefinite number (usually hyperbole)
    "there were jillions of flies";
    - million, billion, trillion, zillion, gazillion, squillion, bajillion, bazillion [N. Amer]

Derived forms: jillions

Type of: large indefinite amount, large indefinite quantity

Encyclopedia: Jillion