One of the mysteries of the English language finally explained.
1A thousand raised to the power of five (10¹⁵).
- ‘If it makes a quadrillion, should Jones be proud?’
- ‘Others are known that are so very slightly unstable that their half-lives are trillions and quadrillions of years.’
- ‘The last time I checked, one of them was 22 quadrillion.’
- ‘It now stands at a quarter of a quadrillion dollars and is increasing at an accelerating pace.’
- ‘The U.S. transportation sector currently consumes 38 quadrillion BTU's of energy annually.’
- ‘By comparison, on a sunny day the human eye is flooded by about 10 quadrillion photons per second.’
- ‘The lesson continues this way up until the quadrillions.’
- ‘Thetans have been compulsively recording intergalactic history for several quadrillion years.’
- ‘IBM's new supercomputer, Blue Gene, may do close to one quadrillion multiplications per second.’
- ‘The U.S. today consumes about 100 quads - 100 quadrillion BTUs - of raw thermal energy per year.’
- ‘The whole financial engineering industry is today a market with a notional value of approximately $1 quadrillion.’
- ‘A UK quadrillion would be one followed by 24 zeroes.’
- ‘One child is killed for about every two quadrillion passenger-miles.’
- ‘I'm sure they'd have fancy statistics saying that this added up to a quadrillion dollars in lost revenue.’
- ‘Check out the table that shows the amount of energy that comes from different sources as measured in quadrillion BTUs.’
- ‘Each of them had been coated with quadrillions of luminescent particles.’
- ‘Electricity accounts for 39% of that, or about 160 quadrillion BTUs.’
- ‘Moving in association with this dust are an estimated 2 quadrillion microorganisms.’
- 1.1British dated A thousand raised to the power of eight (10²⁴).
Late 17th century: from French, from million, by substitution of the prefix quadri- ‘four’ for the initial letters.
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