quadrillion

[ kwo-dril-yuhn ]

noun,plural quad·ril·lions, (as after a numeral) quad·ril·lion.
  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.

Origin of quadrillion

1
1665–75; quadr- + -illion (as in million)

Other words from quadrillion

  • quad·ril·lionth, noun, adjective

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British Dictionary definitions for quadrillion

quadrillion

/ (kwɒˈdrɪljən) /


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

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

determiner
    • amounting to this number: a quadrillion atoms

    • (as pronoun): a quadrillion

Origin of quadrillion

1
C17: from French quadrillon, from quadri- + -illion, on the model of million

Derived forms of quadrillion

  • quadrillionth, adjective

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012