What is the Greek word for defense?

There isn't one single perfect Greek word for "defense" as the best translation depends on the context. However, here are a few options with slightly different nuances:

* Άμυνα (Ámyna): This is probably the closest single word and generally means "defense" or "protection," often in a military context.

* Προστασία (Prostasia): This word means "protection" and can be used for defense in a broader sense, including personal safety or the protection of property.

* Αποτροπή (Apotropí): This word implies "deterrence" or "prevention" of an attack, focusing on the action of preventing something from happening.

The best choice would depend on whether you're talking about military defense, legal defense, self-defense, or the defense of an idea.