Also found in: Thesaurus, Encyclopedia, Wikipedia.


1. The cardinal number equal to 1030.
2. Chiefly British The cardinal number equal to 1054.

[French : Latin nōnus, ninth; see nona- + French million, million (from Old French milion; see million).]

no·nil′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.


1. (Mathematics) (in Britain, France, and Germany) the number represented as one followed by 54 zeros (1054)
2. (Mathematics) (in the US and Canada) the number represented as one followed by 30 zeros (1030). Brit word: quintillion
[C17: from French, from Latin nōnus ninth, on the model of million]
noˈnillionth adj, n
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(noʊˈnɪl yən)

n., pl. -lions, (as after a numeral) -lion, n.
1. a cardinal number represented in the U.S. by 1 followed by 30 zeros, and in Great Britain by 1 followed by 54 zeros.
2. amounting to one nonillion in number.
[1680–90; < French, =non- (< Latin nōnus ninth) + -illion, as in million million]
no•nil′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.
Mentioned in ?
References in periodicals archive ?
They play a vital role in regulating environmental bacteria, and it's estimated there are more than a nonillion (that's a quadrillion times a quadrillion) phages.
The final building on Big Rentz's list is so expensive that its prices range in quadrillions -- or one thousand trillion -- and nonillion, a 32-figure cost.
A column of figures show representation for the numbers hundred through nonillion, with ever increasing triple zeros.
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.
It is valued at 26.9 nonillion dollars, but on Earth, the diamonds would be worth less than dirt.
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.
For example, AFTEREFFECTS is a left-hand qwerty, while NONILLION is a right-hand qwerty.
Saey explains: "The reader is correct that we meant nonillion, not quintillion.
Three hundred and forty undecillion, two hundred and eighty-two decillion, three hundred and sixty-six nonillion, nine hundred and twenty octillion, nine hundred and thirty-eight septillion, four hundred and sixty-three sextillion, four hundred and sixty-three quintillion, three hundred and seventy-four quadrillion, six hundred and seven trillion, four hundred and thirty-one billion, seven hundred and sixty-eight million, two hundred and eleven thousand, four hundred and fifty-six.
In January 2009, the UN was continuing to quote an exchange rate of some 350 nonillion Zimbabwe dollars to one US dollar (old Zimbabwe dollars), but by this point, the Zimbabwe dollar had effectively ceased to function.