sagan
In real, traceable use. Part of the curated seed collection; community review is coming.
Meaning · English
A unit of measurement equal to at least four billion.
Register: humorous, slang
Where it’s used:
Used
American English
Examples
Today, there is a well-known joke unit of measurement called a Sagan. a Sagan is four billion—the smallest number that could fit the description "billions and billions."
Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30)
Sources & notes
Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-07-30 via kaikki.org).
Common questions
What does “sagan” mean?
A unit of measurement equal to at least four billion.
Is “sagan” formal or informal?
sagan is generally humorous, slang.