What does casualty (person) mean?

Here's a list of possible definitions for the term casualty (person):

Casualty (person)
A casualty, as a term in military usage, is a person in military service, combatant or non-combatant, who becomes unavailable for duty due to any of several circumstances, including death, injury, illness, capture or desertion. In civilian usage, a casualty is a person who is killed, wounded or incapacitated by some event; the term is usually used to describe multiple deaths and injuries due to violent incidents or disasters. It is sometimes misunderstood to mean "fatalities", but non-fatal injuries are also casualties.

Chaldean Numerology
The numerical value of casualty (person) in Chaldean Numerology is: 7
Pythagorean Numerology
The numerical value of casualty (person) in Pythagorean Numerology is: 9