This is the 13091st most frequent Swedish word.
tetrapack
A "tetrapack" is a type of carton packaging commonly used for liquid foods like milk or juice.
The word 'tetrapack' is used to describe the container holding the milk.
Jag köpte en liter mjölk i ett tetrapack.
I bought a liter of milk in a tetrapack.
Here, 'tetrapack' refers to the specific carton that the liquid came from.
Sätt tillbaka vätskan i tetrapacket efter att du hällt upp den.
Put the liquid back into the tetrapack after you have poured it out.
In this case, 'tetrapack' signifies an item that is encouraged to be recycled after use.