Main Entry: ca·su·al·ty

Pronunciation: \ˈka-zhəl-tē, ˈkazh-wəl-, ˈka-zhə-wəl-\

Function: noun

Inflected Form(s): plural ca·su·al·ties

Date: 15th century

1 archaic : chance, fortune <losses that befall them by mere casualty — Sir Walter Raleigh>
2 : serious or fatal accident : disaster
3 a : a military person lost through death, wounds, injury, sickness, internment, or capture or through being missing in action b : a person or thing injured, lost, or destroyed : victim <the ex-senator was a casualty of the last election>