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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
    "The number of atoms in the universe is estimated to be in the septillions"
     
  2. [Brit] (dated British usage) the seventh power of a million, equal to 10^42
     
  3. [US] A thousand sextillion, equal to 10^24

Derived forms: septillions

Type of: large integer

Encyclopedia: Septillion