quadrillion

[kwo-dril-yuhn]

noun

plural

quadrillions ,

plural

quadrillion .

1. a cardinal number represented in the U.S. by 1 followed by 15 zeros, and in Great Britain by 1 followed by 24 zeros.

adjective

1. amounting to one quadrillion in number.

quadrillion

/ kwɒˈdrɪljən /

noun

1. US and Canadian word: septillion. (in Britain) the number represented as one followed by 24 zeros (10 ²⁴ )

2. (in the US and Canada) the number represented as one followed by 15 zeros (10 ¹⁵ )

determiner

1. 1. amounting to this number

      a quadrillion atoms

   2. ( as pronoun )

      a quadrillion

Other Word Forms

• quadrillionth noun

Word History and Origins

Origin of quadrillion¹

1665–75; quadr- + -illion (as in million )

Word History and Origins

Origin of quadrillion¹

C17: from French quadrillon, from _quadri- + -illion, on the model of million

Example Sentences

Estimates for the value of all this vary wildly, from billions to quadrillions.

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“There’d be something very strange if the best way to train a model was to just generate, like, a quadrillion tokens of synthetic data and feed that back in,” Altman said.

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With Leonardo's massive computing power, allowing quadrillions of calculations per second, they could simulate a wide range of water flow speeds and conditions.

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They found that as many as 10 quadrillion nanocluster aerosol particles could be emitted per kilogram of cooking fuel -- matching or exceeding those produced from vehicles with internal combustion engines.

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In China's Poyang Lake, the country's largest freshwater lake, the researchers calculated that rotifers were creating 13.3 quadrillion particles every single day.

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