zillion

noun

zil·​lion ˈzil-yən 

: an indeterminately large number

zillions of mosquitoes

zillionth

ˈzil-yən(t)th 

adjective

Examples of zillion in a Sentence

I have a zillion chores to finish before we can leave.

Recent Examples on the Web

Which isn’t to say that the eventual meeting of the minds won’t be colored by at least one seismic upheaval, as the YouTubes and Netflixes flex their zillion-dollar market caps in a bid to unseat one of the NFL’s loyal TV partners. —Anthony Crupi, Sportico.com, 21 Nov. 2025

The higher-ups are disbelieving, but Alex points out that the network has a fancy new AI that can replicate her voice in a zillion languages. —Kimberly Roots, TVLine, 24 Sep. 2025

The zillion-dollar question then arises as to how else the code can be fixed? —Lance Eliot, Forbes.com, 18 Sep. 2025

Yet, for a team whose defense hardly made any plays for months at a time last season and dug an insurmountable hole by never getting the lucky bounce or break in a zillion one-score losses, there were no apologies. —Paul Dehner Jr, New York Times, 8 Sep. 2025

Word History

Etymology

z + -illion (as in million)

First Known Use

1934, in the meaning defined above

Rhymes for zillion

• billion
• million
• pillion
• trillion
• castilian
• civilian
• cotillion
• pavilion
• postilion
• quadrillion
• reptilian
• vermilion

Kids Definition

zillion

noun

zil·​lion ˈzil-yən 

: a large number

zillions of ants