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carbuncle

[kahr-buhng-kuh l] /ˈkɑr bʌŋ kəl/
noun
1.
Pathology. a painful circumscribed inflammation of the subcutaneous tissue, resulting in suppuration and sloughing, and having a tendency to spread somewhat like a boil, but more serious in its effects.
2.
a gemstone, especially a garnet, cut with a convex back and a cabochon surface.
3.
Also called London brown. a dark grayish, red-brown color.
4.
Obsolete. any rounded red gem.
adjective
5.
having the color carbuncle.
Origin of carbuncle
1150-1200
1150-1200; Middle English < Anglo-French < Latin carbunculus kind of precious stone, tumor, literally, live coal, equivalent to carbōn- (stem of carbō) burning charcoal + -culus -cule1, apparently assimilated to derivates from short-vowel stems; cf. homunculus
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Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for carbuncle

carbuncle

/ˈkɑːˌbʌŋkəl/
noun
1.
an extensive skin eruption, similar to but larger than a boil, with several openings: caused by staphylococcal infection
2.
a rounded gemstone, esp a garnet cut without facets
3.
a dark reddish-greyish-brown colour
Derived Forms
carbuncled, adjective
carbuncular (kɑːˈbʌŋkjʊlə) adjective
Word Origin
C13: from Latin carbunculus diminutive of carbō coal
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for carbuncle
n.

early 13c., "fiery jewel," from Old North French carbuncle (Old French charbocle, charboncle) "carbuncle-stone," also "carbuncle, boil," from Latin carbunculus "red gem," also "red, inflamed spot," literally "a little coal," from carbo (genitive carbonis) "coal" (see carbon). Originally of rubies, garnets, and other red jewels; in English the word was applied to tumors from late 14c.

Online Etymology Dictionary, © 2010 Douglas Harper
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carbuncle in Medicine

carbuncle car·bun·cle (kär'bŭng'kəl)
n.

  1. A deep-seated pyogenic infection of several contiguous hair follicles, with formation of connecting sinuses, often preceded or accompanied by fever, malaise, and prostration.

  2. See anthrax.


car·bun'cu·lar (-kyə-lər) adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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