It is a more formal and polite way of saying goodbye than "Ciao" or "Addio". It is used in situations where you expect to see the person again.
Here are some ways you can use "arrivederci":
* "Arrivederci, amico!" (Goodbye, friend!)
* "Arrivederci, signora!" (Goodbye, madam!)
* "Arrivederci, a presto!" (Goodbye, see you soon!)
You can also use "arrivederci" to mean "see you later" or "until next time".