eschar

[es-kahr, -ker]
noun Pathology.
a hard crust or scab, as from a burn.

Origin:
1375–1425; late Middle English escare < Late Latin eschara < Greek eschára hearth, brazier, coals and therefore indication of burning; cf. scar1

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World English Dictionary
eschar (ˈɛskɑː)
 
n
a dry scab or slough, esp one following a burn or cauterization of the skin
 
[C16: from Late Latin eschara scab, from Greek eskhara hearth, pan of hot coals (which could inflict burns); see scar1]

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American Heritage
Medical Dictionary

eschar es·char (ěs'kär')
n.
A dry scab or slough formed on the skin as a result of a burn or by the action of a corrosive or caustic substance.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
Disinfect the area of the eschar and clean disinfectant with sterile gauze soaked in sterile saline.
There may be moderate to severe edema with the eschar.
If it is in the eschar stage, use sterile swab to collect lesion material under eschar.
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