What prefix word means to take things out of a box or case?

The prefix that means to take things out of a box or case is "de-".

Here are some examples:

* Decant: To pour a liquid from one container to another, often to remove sediment.

* Debox: To remove something from a box.

* Unpack: To remove the contents of a package or suitcase.

Let me know if you have any other questions!