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centillion

[sen-til-yuh n]
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noun, plural cen·til·lions, (as after a numeral) cen·til·lion.
  1. a cardinal number represented in the U.S. by 1 followed by 303 zeros, and in Great Britain by 1 followed by 600 zeros.
adjective
  1. amounting to one centillion in number.

Origin of centillion

1850–55; < Latin cent(um) 100 + -illion (as in million, billion, etc.)
Related formscen·til·lionth, adjective, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for centillion

centillion

noun plural -lions or -lion
  1. (in Britain and Germany) the number represented as one followed by 600 zeros (10 600)
  2. (in the US, Canada, and France) the number represented as one followed by 303 zeros (10 303)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for centillion

n.

1846, from centi- + ending from million, etc. Cf. French centillion (by 1841). Related: Centillionth.

Online Etymology Dictionary, © 2010 Douglas Harper