[seks-til-yuh n]

noun, plural sex·til·lions, (as after a numeral) sex·til·lion.

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 formssex·til·lionth, adjective, noun Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for sextillion

Contemporary Examples of sextillion

Historical Examples of sextillion

  • By rhythmic reversion, sextillion worlds passed into diaphanous luster; fire became firmament.

    Autobiography of a YOGI

    Paramhansa Yogananda

British Dictionary definitions for sextillion


noun plural -lions or -lion

(in Britain, France, and Germany) the number represented as one followed by 36 zeros (10 36)
(in the US and Canada) the number represented as one followed by 21 zeros (10 21)
Derived Formssextillionth, adjective, noun

Word Origin for sextillion

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

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