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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 ?
Therefore, the odds of you getting the plague from a flea in your home is about one in a skillion jillion.
2 Conversion Speed Strip Kit," and he sells a jillion of them.
It is equal to JILLION, which also means "an indeterminately large number.
She'd have to eat a jillion cookies like this to even feel it.
Please don't sag joining clubs--I've heard that a jillion times.
Spend the morning in a meeting, the afternoon teambuilding in the wilderness, and the evening under a jillion stars you can actually see.
He got me about a jillion times and beat me with all his tricks.
Less than 20 years and about a jillion technological advances later, office workers have gone way beyond the fax machine and are plunging headlong into what Microsoft Chairman and Chief Software Architect Bill Gates calls "The Digital Decade.
I mean, that's just one example; there's a jillion others.
And it's 'leventy-'leven jillion quid to the chances of Austin Healey being invited to Graham Henry's next birthday party that the sort of sort-of music which will be inflicted on Joe Televiewer will be exactly that which Spotty Herberts call forth from ghetto blasters: rotten rock or pesky pop or rancid rap.
21] "These songs are about my folks and my relatives--about a jillion of them--that got hit by the drought, the dust and the wind, the banker and the landlord and the police all at the same time.
I've often wished I had kept much better records of deer sightings, rutting activities, movement patterns, and a jillion other pertinent facts over the past 30 years.