Jillion definition

jĭlyən
An indefinitely large number.
noun
8
2
(informal) An indefinite but very large number.
noun
7
2
(slang, hyperbolic) An unspecified large number (of).
noun
0
1
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Other Word Forms

Noun

Singular:
jillion
Plural:
jillions

Origin of jillion

  • On the model of million billion etc.

    From American Heritage Dictionary of the English Language, 5th Edition

  • See +‎ -illion

    From Wiktionary