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n. Informal
An indefinitely large number.

[On the model of million, billion, etc.]

jil′lion·aire′ (jĭl′yə-nâr′) n.
jil′lionth adj. & n.


(Mathematics) informal an extremely large number or amount: jillions of pounds.
[C20: fanciful coinage based on million, billion, etc]
ˈjillionth adj


(ˈdʒɪl yən)

n., pl. -lions, (as after a numeral) -lion. Informal.
a vast number.
[1940–45; expressive formation based on million, etc.]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.jillion - a very large indefinite number (usually hyperbole); "there were millions of flies"
large indefinite amount, large indefinite quantity - an indefinite quantity that is above the average in size or magnitude


An indeterminately great amount or number:
million (often used in plural), multiplicity, ream, trillion.
Informal: bushel, gob (often used in plural), heap (often used in plural), load (often used in plural), lot, oodles, passel, peck, scad (often used in plural), slew, wad, zillion.


n (inf)Unmenge f, → Unzahl f; jillions of …jede Menge
References in periodicals archive ?
To prove this a false flag operation, Davidsson gave a jillion arguments.
For example: About a jillion folks will show up at White Water Bay Saturday morning and the hearty ones will plunge into freezing water to help fund Special Olympics.
Martin envisions a day when digital government will offer Arkansans "more of a one stop" where businesses "don't have to get with 50 jillion agencies" to get information and conduct transactions.
While California Chrome might have won a cool $10million at the world's richest horse race, the iconic starlet's closing concert was worth a jillion bucks
Professional rugby player Jillion Potter has been knocked down by everything from injury to cancer.
Therefore, the odds of you getting the plague from a flea in your home is about one in a skillion jillion.
A riddle unwise to the two hundred jillion jillions
You had a jillion startups and lots of money pouring in," said a veteran production exec.
At about 70,000', looking outside, I saw a sight I was not prepared for--the sky was black, you could see stars during the day, visibility was out to the horizon a jillion miles away, and you could easily see the curvature of the earth.
Americans used to have more spare time, and fishing once was the thing to do after hours rather than one of a jillion things, including kids' sports and other activities, and more work.
She'd have to eat a jillion cookies like this to even feel it.
It is equal to JILLION, which also means "an indeterminately large number.