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tredecillion

[tree-di-sil-yuh n]
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noun, plural tre·de·cil·lions, (as after a numeral) tre·de·cil·lion.
  1. a cardinal number represented in the U.S. by 1 followed by 42 zeros, and in Great Britain by 1 followed by 78 zeros.
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adjective
  1. amounting to one tredecillion in number.
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Origin of tredecillion

1930–35; < Latin trē(s) three + decillion
Related formstre·de·cil·lionth, adjective, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018