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

Noun: septillion  sep'til-yun [N. Amer], sep'til-ee-un [Brit]
  1. The number that is represented as a one followed by 24 zeros in the US
  2. [Brit] (dated British usage) seventh power of a million, 10^24

Derived forms: septillions

Type of: large integer

Encyclopedia: Septillion