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sexdecillion

[seks-di-sil-yuh n]
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noun, plural sex·de·cil·lions, (as after a numeral) sex·de·cil·lion.
  1. a cardinal number represented in the U.S. by 1 followed by 51 zeros, and in Great Britain by 1 followed by 96 zeros.
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adjective
  1. amounting to one sexdecillion in number.
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Origin of sexdecillion

First recorded in 1935–40; sex- + decillion
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018