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blackhead

The Columbia Encyclopedia, 6th ed. | 2011 | Copyright

blackhead yellowish or blackish plug of material accumulated in the duct of a sebaceous gland. The material consists of keratin (horny cells of the epidermis) and modified sebum (oily secretions of the sebaceous gland). Blackheads are the primary lesions in acne . Treatment is the same as for acne, with frequent cleansing of the skin followed by the application of astringent solutions. Plugs should be extracted only by a physician, since damage to the surrounding tissues occasioned by squeezing often leads to scarring.

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blackhead

A Dictionary of Zoology | 1999 | | Copyright

blackhead A disease of turkeys caused by the protozoon Histomonas meleagridis. The disease affects the caecum and liver of the bird, and the mortality rate may be high. The disease is transmitted by a nematode worm parasitic in the intestines of turkeys.

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MICHAEL ALLABY. "blackhead." A Dictionary of Zoology. 1999. Encyclopedia.com. 31 May. 2012 <http://www.encyclopedia.com>.

MICHAEL ALLABY. "blackhead." A Dictionary of Zoology. 1999. Encyclopedia.com. (May 31, 2012). http://www.encyclopedia.com/doc/1O8-blackhead.html

MICHAEL ALLABY. "blackhead." A Dictionary of Zoology. 1999. Retrieved May 31, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O8-blackhead.html

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blackhead

The Oxford Pocket Dictionary of Current English | 2009 | Copyright

black·head / ˈblakˌhed/ • n. a plug of sebum in a hair follicle, darkened by oxidation.

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blackhead

Oxford Dictionary of Rhymes | 2007 | Copyright

blackhead •abed, ahead, bed, behead, Birkenhead, bled, bread, bred, coed, cred, crossbred, dead, dread, Ed, embed, Enzed, fed, fled, Fred, gainsaid, head, infrared, ked, lead, led, Med, misled, misread, Ned, outspread, premed, pure-bred, read, red, redd, said, samoyed, shed, shred, sked, sled, sped, Spithead, spread, stead, ted, thread, tread, underbred, underfed, wed •trackbed • flatbed • deathbed •airbed • daybed • seabed •reed bed, seedbed •sickbed • childbed • hotbed • roadbed •footbed • sunbed • sofa bed •waterbed • feather bed • breastfed •dripfed • spoonfed • Szeged •blackhead •cathead, fathead, Flathead •masthead •bedhead, deadhead, redhead •egghead •airhead, stairhead •railhead • maidenhead • Gateshead •beachhead • greenhead • meathead •bighead • bridgehead •dickhead, thickhead •pinhead, skinhead •pithead • Holyhead • sleepyhead •fountainhead • whitehead • godhead •blockhead •drophead, hophead, mophead •hothead • hogshead •sorehead, warhead •Roundhead • bonehead • arrowhead •bullhead • wooden-head • sub-head •bulkhead •chucklehead, knucklehead •drumhead • muttonhead • spearhead •go-ahead • dunderhead • figurehead •loggerhead • hammerhead •letterhead • bobsled • cirriped • biped •moped • quadruped

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Free newspaper and magazine articles

	Moseley stand firm to stave off Blackheath's pressure; Blackheath 14 Moseley 18. Newspaper article from: The Birmingham Post (England); 11/2/1998
	SO YOU WANT TO LIVE.. IN BLACKHEATH. Newspaper article from: The Mail on Sunday (London, England); 10/26/2003
	SO YOU WANT TO LIVE IN... BLACKHEATH. Newspaper article from: The Mail on Sunday (London, England); 8/7/2005