1 definition by Serai

Top Definition
A unit of measurement equalling "billions and billions"


From Carl Sagan, well-known astronomer and popular science author
On a clear night, you can see a whole sagan of stars.

Don't drink the water - there's a sagan of germs swimming around in there!
by Serai April 05, 2004

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug