jillion

[jil-yuh n]Informal.
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adjective
  1. of or noting such a quantity: a jillion problems.

Origin of jillion

First recorded in 1940–45; expressive formation based on million, billion, etc.
Related formsjil·lionth, noun, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018


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British Dictionary definitions for jillion

jillion

noun
  1. informal an extremely large number or amountjillions of pounds
Derived Formsjillionth, adjective

Word Origin for jillion

C20: fanciful coinage based on million, billion, etc
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 jillion
n.

by 1939, arbitrary coinage, modeled on million, etc.

Online Etymology Dictionary, © 2010 Douglas Harper