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septendecillion

[sep-ten-di-sil-yuh n]
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noun, plural sep·ten·de·cil·lions, (as after a numeral) sep·ten·de·cil·lion.
  1. a cardinal number represented in the U.S. by 1 followed by 54 zeros, and in Great Britain by 1 followed by 102 zeros.
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adjective
  1. amounting to one septendecillion in number.
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Origin of septendecillion

1935–40; < Latin septendec(im) seventeen + -illion, as in million
Related formssep·ten·de·cil·lionth, adjective, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018