Definition

An indefinitely large number; a hyperbolic, informal term for an astronomically huge quantity with no precise value. It's used colloquially to exaggerate rather than specify an actual number.

Example Usage

I've told you a zillion times not to leave your dishes in the sink.

Origin

A blend of 'z' (chosen for its position at the end of the alphabet) with the suffix '-illion' from million, billion, trillion, popularized in American English in the mid-20th century.

Fun Fact

Unlike million, billion, or trillion, 'zillion' has no mathematical definition and is purely informal; mathematicians and statisticians avoid it entirely in technical writing.

Source: Definition backfill (hailey)

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