quadrillion

quadrillion

[kwo-dril-yuhn]
noun, plural quadrillions (as after a numeral) quadrillion.
1.
a cardinal number represented in the U.S. by 1 followed by 15 zeros, and in Great Britain by 1 followed by 24 zeros.
adjective
2.
amounting to one quadrillion in number.

Origin:
1665–75; quadr- + -illion (as in million)

quadrillionth, noun, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To quadrillion
Collins
World English Dictionary
quadrillion (kwɒˈdrɪljən)
 
n
1.  US and Canadian word: septillion (in Britain) the number represented as one followed by 24 zeros (1024)
2.  (in the US and Canada) the number represented as one followed by 15 zeros (1015)
 
determiner
3.  a.  amounting to this number: a quadrillion atoms
 b.  (as pronoun): a quadrillion
 
[C17: from French quadrillon, from quadri- + -illion, on the model of million]
 
quad'rillionth
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
Etymonline
Word Origin & History

quadrillion
1674, from Fr. quadrillion (16c.) from quadri- "four" + (m)illion. Cf. billion. In Great Britain, the fourth power of a million (1 followed by 24 zeroes); in the U.S., the fifth power of a thousand (1 followed by 15 zeroes).
Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
Related Words
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature