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1. The cardinal number equal to 1018.
2. Chiefly British The cardinal number equal to 1030.

[Latin quīntus, fifth; see penkwe in Indo-European roots + (m)illion.]

quin·til′lion adj.


n, pl -lions or -lion
1. (Mathematics) (in Britain, France, and Germany) the number represented as one followed by 30 zeros (1030). US and Canadian word: nonillion
2. (Mathematics) (in the US and Canada) the number represented as one followed by 18 zeros (1018). Former Brit word: trillion
[C17: from Latin quintus fifth + -illion, as in million]
quinˈtillionth adj


(kwɪnˈtɪl yən)

n., pl. -lions, (as after a numeral) -lion, n.
1. a cardinal number represented in the U.S. by 1 followed by 18 zeros, and in Great Britain by 1 followed by 30 zeros.
2. amounting to one quintillion in number.
[1665–75; < Latin quīnt(us) fifth + -illion (as in million)]
quin•til′lionth, n., adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.quintillion - the number that is represented as a one followed by 18 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


n (Brit) → Quintillion f; (US) → Trillion f
References in classic literature ?
To comprehend the meaning of these figures, it is necessary to observe that a quintillion is to a billion as a billion is to unity; in other words, there are as many billions in a quintillion as there are units in a billion.
Alcatel-Lucent Submarine Networks, the undersea cables subsidiary of Alcatel-Lucent, and Quintillion Subsea Holdings LLC have entered into a turnkey contract for the design and construction of a submarine cable system from Prudhoe Bay to Nome.
It would be able to perform one quintillion (a billion billion) calculations per second -- a figure which is known as one exaflop -- and aid the US in conducting scientific research and performing complex simulations.
system by 2025, which would be capable of one quintillion (a billion billion)
5 quintillion bytes of data is created for validation and to analyze future trends.
Teraflops or TFlops are 1012 Flops, petaflops or PFlops are 1015 (1000 trillion) Flops and exaflops or EFlops are 1018 (one quintillion or one million TFLOPS) Flops.
Given 9 quintillion possible outcomes for the NCAA tournament, what are the most successful strategies for picking a winning bracket?
Digital Editor, Quintillion Media (till recently a television journalist with CNN-IBN)
Now the counter has been upgraded to a 64-bit integer, the singer has got a fair stretch to go until he reaches 9,223,372,036,854,775,808 views - that's more than 9 quintillion.
That means with the upgrade, YouTube's view counter could now go up to 9 quintillion views.
5 quintillion bytes of data generated on the planet every day provides a challenge for organizations to build powerful technology infrastructures to gain actionable insights from this data.
With 43 quintillion combinations, and its unique turning and twisting action, this cube conundrum is still the ultimate when it comes to perplexing puzzles.