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1. The cardinal number equal to 1024.
2. Chiefly British The cardinal number equal to 1042.

[French : Latin septem, seven; see septet + French -illion (as in million, million, from Old French milion; see million).]

sep·til′lion adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


n, pl -lions or -lion
1. (Mathematics) (in Britain, France, and Germany) the number represented as one followed by 42 zeros (1042)
2. (Mathematics) (in the US and Canada) the number represented as one followed by 24 zeros (1024). Brit word: quadrillion
[C17: from French, from sept seven + -illion, on the model of million]
sepˈtillionth adj, n
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(sɛpˈtɪl yən)

n., pl. -lions, (as after a numeral) -lion, n.
1. a cardinal number represented in the U.S. by 1 followed by 24 zeros, and in Great Britain by 1 followed by 42 zeros.
2. amounting to one septillion in number.
[1680–90; < French, =sept seven + -illion, as in million]
sep•til′lionth, n., adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.septillion - the number that is represented as a one followed by 24 zeros
France, French Republic - a republic in western Europe; the largest country wholly in Europe
U.S.A., United States, United States of America, US, USA, America, the States, U.S. - North American republic containing 50 states - 48 conterminous states in North America plus Alaska in northwest North America and the Hawaiian Islands in the Pacific Ocean; achieved independence in 1776
large integer - an integer equal to or greater than ten
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
The project started two months ago but they haven't detected any spike in energy, something that indicates "neutrinoless double-beta decay" is a lot rarer than previously thought.&nbsp;According to a release from the institute, a single atom of tellurium should go through the process once every 10 septillion years.&nbsp;
One egg: 1,000 (thousand) Two eggs: 1,000,000 (million) Three eggs: 1,000,000,000 (billion) Four eggs: 1,000,000,000,000 (trillion) Five eggs: 1,000,000,000,000,000 (quadrillion) Six eggs: 1,000,000,000,000,000,000 (quintillion) Seven eggs: 1,000,000,000,000,000,000,000 (sextillion) Eight eggs: 1,000,000,000,000,000,000,000,000 (septillion) Nine eggs: 1,000,000,000,000,000,000,000,000,000 (octillion) 10 eggs: 1,000,000,000,000,000,000,000,000,000,000 (nonillion) 11 eggs: 1,000,000,000,000,000,000,000,000,000,000,000 (decillion) 12 eggs: 1,000,000,000,000,000,000,000,000,000,000,000,000 (undecillion) Niki Tennant A shell-shocked mum hit the breakfast jackpot when she and her husband cracked open two boxes of eggs from a Wishaw dairy -and all 12 were double yolkers.
340 undecillion, 282 decillion, 366 nonillion, 920 octillion, 938 septillion, 463 sextillion, 463 quintillion, 374 quadrillion, 607 trillion, 431 billion, 768 million, 211 thousand and 456.
And a lot more--3.6 x [10.sup.49] watts, or 36 septillion yotta-watts--blasted out of the black hole collision that the Advanced Laser Interferometer Gravitational-Wave Observatory detected in September (see Page 10).
2008) ("[T]he prosecution presented evidence that the DNA profile on the vaginal swab would occur at random among unrelated individuals in about one in 950 sextillion African-Americans, one in 130 septillion Caucasians, and one in 930 sextillion Hispanics.").
Bots have super intelligence -- they learn, per- forming YottaFLOPS [or one septillion floating point operations per second], seeing all scenarios -- but ask them if a joke is funny and they stutter.
Did you know that the earth weighs 6.6 septillion tons?
yottabyte (abbreviated as YB, also seen as yobibyte or YiB): The yottabyte is a unit of information (or computer storage) equal to 1 septillion bytes (which is 1 long-scale quadrillion, or 1,024) or equal to 1 quadrillion gigabytes.
That is equal to a septillion bytes or about 500 quintillion pages of text.
In the global scenario, the transfer of information would add nearly 78 septillion years to the computation.
237 years Password Generator phugu2Ac 10 days Ge4T2ju= 57 days #wevU_2e=a 928 years frUT2a7Wa+Era9u 2 trillion years Modified Passphrase Complex passwords are safer 12 decillion years Complexpasswordsaresafer 19 septillion years ComplekspasswordsRsafer 372 sextillion years But, should a real black-hat target your firm intent on extracting your clients' data, all it would have to do is penetrate your network security; find the tax, QB or client billing applications; copy the data files; and strap the password protected files clown Onto it small cluster of high-end processor PCs that, attack the encryption from a dozen or more angles.