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[seks-til-yuh n] /sɛksˈtɪl yən/
noun, plural sextillions (as after a numeral) sextillion.
a cardinal number represented in the U.S. by 1 followed by 21 zeros, and in Great Britain by 1 followed by 36 zeros.
amounting to one sextillion in number.
Origin of sextillion
1680-90; < French < Latin sext(us) sixth + -illion, as in million
Related forms
sextillionth, adjective, noun Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for sextillion
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Historical Examples
  • By rhythmic reversion, sextillion worlds passed into diaphanous luster; fire became firmament.

    Autobiography of a YOGI Paramhansa Yogananda
British Dictionary definitions for sextillion


noun (pl) -lions, -lion
(in Britain, France, and Germany) the number represented as one followed by 36 zeros (1036)
(in the US and Canada) the number represented as one followed by 21 zeros (1021)
Derived Forms
sextillionth, adjective, noun
Word Origin
C17: from French, from sex- + -illion, on the model of septillion
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
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Word Origin and History for sextillion

1680s, from Latin sext-, comb. form of sex "six" (see six) + (m)illion. Cf. billion. Related: Sextillionth.

Online Etymology Dictionary, © 2010 Douglas Harper
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