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trillion

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tril⋅lion

  [tril-yuhn] noun, plural -lions, (as after a numeral) -lion, adjective
Use trillion in a Sentence
–noun
1. a cardinal number represented in the U.S. by 1 followed by 12 zeros, and in Great Britain by 1 followed by 18 zeros.
–adjective
2. amounting to one trillion in number.
Origin:
1680–90; < F, equiv. to tr(i)- tri- + (m)illion million

Related forms:
trillionth, noun, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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tril·lion   (trĭl'yən)   
n.  

  1. The cardinal number equal to 1012.

  2. Chiefly British The cardinal number equal to 1018.


[French : tri-, third power (from Latin tri-, tri-) + (m)illion, million (from Old French milion; see million).]
tril'lion adj.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

trillion 
1690, from Fr. trillion (c.1484), from tri- + (m)illion. Cf. billion. In the U.S., the third power of a thousand (one thousand billion, 1 followed by 12 zeroes); in Great Britain, the third power of a million (one million billion, 1 followed by 18 zeroes), which is the original sense.
Online Etymology Dictionary, © 2001 Douglas Harper
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Computing Dictionary

trillion mathematics
In Britain, France, and Germany, 10^18 or a million cubed.
In the USA and Canada, 10^12.
[Elsewhere?]
(1996-10-03)

The Free On-line Dictionary of Computing, © 1993-2007 Denis Howe
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