Plural form: multiple instances of tissue damage caused by freezing, or the plural present-tense verb form when frost injures multiple areas.
The standard English plural of 'frostbite,' formed by adding '-s.' The word itself is a metaphorical compound from 'frost' and 'bite,' dating back to at least the 17th century.
Frostbite becomes serious—tissue damage occurs so fast that mountain climbers and Arctic explorers have to constantly check their skin, which is why this medical condition became such a famous part of survival stories.
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