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Deadly force, also known as lethal force, is the use of force that is likely to cause serious bodily injury or death to another person. In most jurisdictions, the use of deadly force is justified only under conditions of extreme necessity as a last resort , when all lesser means have failed or cannot reasonably be employed.
An acceptable loss, also known as acceptable damage or acceptable casualties, is a military euphemism used to indicate casualties or destruction inflicted by the enemy that is considered minor or tolerable. [1]
Lethality (also called deadliness or perniciousness) is how capable something is of causing death.Most often it is used when referring to diseases, chemical weapons, biological weapons, or their toxic chemical components.
"Mortal Wound" dictionary entry from The New World of English Words By Edward Phillips (1720). A mortal wound is an injury that will ultimately lead to a person's death. [1] [2] Mortal refers to the mortality of a human: whether they are going to live or die. [3] Wound is another term for injury. The expression can also be used figuratively. [3]
This broad definition includes two subsets: [4] A suicide threat is any interpersonal action, verbal or nonverbal, without a direct self-injurious component, that a reasonable person would interpret as communicating or suggesting that suicidal behavior might occur in the near future.
Injury is physiological damage to the living tissue of any organism, whether in humans, in other animals, or in plants. Injuries can be caused in many ways, including mechanically with penetration by sharp objects such as teeth or with blunt objects , by heat or cold, or by venoms and biotoxins .
Toxicity is the degree to which a chemical substance or a particular mixture of substances can damage an organism. [1] Toxicity can refer to the effect on a whole organism, such as an animal, bacterium, or plant, as well as the effect on a substructure of the organism, such as a cell (cytotoxicity) or an organ such as the liver (hepatotoxicity).
Damage "does not necessarily imply total loss of system functionality, but rather that the system is no longer operating in its optimal manner". [1] Damage to physical objects is "the progressive physical process by which they break", [2]: 1. and includes mechanical stress that weakens a structure, even if this is not visible. [2]: ix.