septillion

[ sep-til-yuhn ]

noun,plural sep·til·lions, (as after a numeral) sep·til·lion.
  1. a cardinal number represented in the U.S. by 1 followed by 24 zeros, and in Great Britain by 1 followed by 42 zeros.

adjective
  1. amounting to one septillion in number.

Origin of septillion

1
1680–90; <French, equivalent to septseven + -illion, as in million

Other words from septillion

  • sep·til·lionth, noun, adjective

Words Nearby septillion

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British Dictionary definitions for septillion

septillion

/ (sɛpˈtɪljən) /


nounplural -lions or -lion
  1. (in Britain, France, and Germany) the number represented as one followed by 42 zeros (10 42)

  2. (in the US and Canada) the number represented as one followed by 24 zeros (10 24): Brit word: quadrillion

Origin of septillion

1
C17: from French, from sept seven + -illion, on the model of million

Derived forms of septillion

  • septillionth, adjective, noun

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