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A thick, coagulated crust or slough which develops following a thermal burn or chemical or physical cauterization of the skin. [G. eschara, a fireplace, a scab caused by burning]
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es·char 'es-.kär n a scab formed esp. after a burn
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n.
a scab or slough, as produced by the action of heat or a corrosive substance on living tissue.
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es·char (esґkahr) [Gr. eschara scab] 1. a slough produced by a thermal burn, by a corrosive application, or by gangrene. 2. the lesion seen in certain rickettsioses; see tache noire.Medical dictionary. 2011.