1. the number equal to 1 followed by 18 zeros (1,000,000,000,000,000,000) in the US system
Usage: mathematics
2. the number equal to 1 followed by 30 zeros in the British system
Usage: mathematics; British

Examples

• The national debt reached several quintillion dollars in the hypothetical scenario.
• A quintillion is a thousand times larger than a quadrillion.
• Scientists estimated there are quintillions of stars in the observable universe.
• The computer processed quintillions of calculations per second.
• It would take quintillions of years for that process to complete naturally.
• The data storage capacity was measured in quintillions of bytes.