noun
- the number represented by 1 followed by 27 zeros in the US system, or 1 followed by 48 zeros in the British system
Usage: mathematical
Examples
- An octillion is an incredibly large number that’s difficult to comprehend.
- The national debt reached several octillions in the fictional economy.
- Scientists estimate there are fewer than an octillion atoms in the observable universe.
- The calculator couldn’t display numbers as large as an octillion.
- In American notation, an octillion has 27 zeros after the 1.
- The difference between a billion and an octillion is astronomical.