What legal term describes the justified use of force in self-defense?

The term that best describes the justified use of force in self-defense is justifiable homicide. This refers to a situation where an individual uses lethal force against another person in a manner that is legally permissible, typically when they reasonably believe that such force is necessary to protect themselves from imminent harm or death. In many legal systems, this concept hinges on the notions of proportionality and necessity, allowing individuals to defend themselves when faced with a credible threat.

Justifiable homicide acknowledges the circumstances under which the use of lethal force is appropriate and does not hold the individual criminally liable for the act, assuming it adheres to the legal definitions and criteria surrounding self-defense. Understanding this term is crucial in firearm legal training, as it outlines the boundaries within which one may operate when faced with a threat.