What term is used to refer to devastating weapons that fall outside traditional arms categories?

The term that refers to devastating weapons that fall outside traditional arms categories is "Weapons of Mass Destruction" (WMD). This classification encompasses a range of weaponry that includes nuclear, chemical, and biological weapons. WMD are designed to cause significant harm or destruction on a large scale, often affecting not just military targets but also civilian populations and infrastructure.

WMD are distinct from conventional arms, which include standard military firearms and ammunition designed for traditional combat scenarios. Unlike conventional weapons, the impact of WMD can be catastrophic and long-lasting, leading to mass casualties and severe environmental harm, thereby making them a focal point in discussions around international security and arms control. Recognizing WMD as a separate category underscores the unique threat they pose compared to more standard forms of military engagement.