eschar
UK[ˈɛskɑː]US[ˈɛskɑːr]
n
A dry, dark scab or piece of dead tissue, typically caused by a burn, gangrene, or certain skin infections.
Morpheme Breakdown
eschar
eschar
Etymology
The word 'eschar' entered English via French medical terminology, tracing its ultimate origin to Ancient Greek. The Greek word 'eskhára' primarily meant a fireplace or brazier, the source of heat. This concrete meaning evolved metaphorically in medical contexts to describe a lesion caused by heat, such as a burn or a cautery. Through Latin and French, the term specialized further to denote the crust or scab that forms over such a wound, solidifying its modern medical definition as a patch of dead tissue separating from healthy skin.
Analysis
Structure: eschar
This word is a simplex form. It is a loanword from Middle French 'eschare', which derived from Late Latin 'eschara', itself borrowed from Ancient Greek 'ἐσχάρα' (eskhára), meaning 'hearth, brazier, scab'.
Examples
The burn victim's wound formed a thick, black eschar.
Debridement is often necessary to remove the necrotic eschar and promote healing.
A characteristic eschar may be present at the site of a tick bite in certain rickettsial infections.