frostbite

This term describes a specific medical condition where extreme cold causes tissue death. It carries a clinical and urgent connotation, often associated with survival scenarios, high-altitude mountaineering, or severe winter accidents. It is distinct from hypothermia, which affects the entire body's core temperature, whereas frostbite is localized to the extremities.

Grammatically, this noun is treated as an uncountable mass noun. It describes a condition or a type of injury rather than a discrete object. Consequently, it does not have a plural form and cannot be counted with numbers; instead, it requires partitive constructions such as a case of frostbite or severe frostbite to describe specific instances.