blackhead

(redirected from Comedone)
Also found in: Thesaurus, Medical, Encyclopedia.

black·head

 (blăk′hĕd′)
n.
1. A skin lesion consisting of a hair follicle that is occluded with sebum and keratin, appearing black at the surface.
2. An infectious disease of turkeys and some wildfowl that is caused by a protozoan (Histomonas meleagridis) and results in lesions of the intestine and liver. Also called enterohepatitis, histomoniasis, infectious enterohepatitis.
3. Any of various birds, such as the scaup, with dark head markings.

blackhead

(ˈblækˌhɛd)
n
1. (Pathology) a black-tipped plug of fatty matter clogging a pore of the skin, esp the duct of a sebaceous gland. Technical name: comedo
2. (Veterinary Science) an infectious and often fatal disease of turkeys and some other fowl caused by the parasitic protozoa Histomonas meleagridis. Technical name: infectious enterohepatitis
3. (Animals) any of various birds, esp gulls or ducks, with black plumage on the head

black•head

(ˈblækˌhɛd)

n.
1. a small, black-tipped fatty mass in a skin follicle, esp. of the face; comedo.
2. any of several birds having a black head.
3. an intestinal and liver disease of turkeys, chickens, and related birds, caused by the protozoan Histomonas meleagridas, often darkening the skin of the head.
[1650–60]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.blackhead - a black-tipped plug clogging a pore of the skinblackhead - a black-tipped plug clogging a pore of the skin
blemish, mar, defect - a mark or flaw that spoils the appearance of something (especially on a person's body); "a facial blemish"
cutis, skin, tegument - a natural protective body covering and site of the sense of touch; "your skin is the largest organ of your body"
Translations
بَثْرَةٌ سَوْداء، حَبُّ الشَّباب
uher
hudorm
mitesszer
fílapensill
siyah nokta

blackhead

[ˈblækhed] Nespinilla f

blackhead

[ˈblækhɛd] npoint m noirblack hole n (ASTRONOMY)trou m noirblack humour (British) black humor (US) nhumour m noirblack ice nverglas m

blackhead

[ˈblækˌhɛd] npunto nero, comedone m

black

(blӕk) adjective
1. of the colour in which these words are printed. black paint.
2. without light. a black night; The night was black and starless.
3. dirty. Your hands are black!; black hands from lifting coal.
4. without milk. black coffee.
5. evil. black magic.
6. (often offensive. currently acceptable in the United States, South Africa etc) Negro, of African, West Indian descent.
7. (especially South Africa) coloured; of mixed descent (increasingly used by people of mixed descent to refer to themselves).
noun
1. the colour in which these words are printed. Black and white are opposites.
2. something (eg paint) black in colour. I've used up all the black.
3. (often with capital. often offensive: currently acceptable in the United states, South Africa etc) a Negro; a person of African, West Indian etc descent.
verb
to make black.
ˈblackness noun
ˈblacken verb
1. to make or become black. The sky blackened before the storm.
2. to make to seem bad. She blackened his character.
3. to clean with black polish. He blackened his boots.
black art/magic
magic performed for evil reasons. He tries to practise black magic.
ˈblackbird noun
a dark-coloured bird of the thrush family.
ˈblackboard noun
a dark-coloured board for writing on in chalk (used especially in schools).
black box
a built-in machine for automatic recording of the details of a plane's flight. They found the black box two miles away from the wreckage of the crashed plane.
the Black Death noun
the plague that killed large numbers of people in Europe in the 14th to 18th centuries.
black eye
an eye with bad bruising around it (eg from a punch). George gave me a black eye.
ˈblackhead noun
a small black-topped lump in a pore of the skin, especially of the face.
ˈblacklist noun
a list of people who are out of favour etc.
verb
to put (a person etc) on such a list.
ˈblackmail verb
to obtain money illegally from (a person), usually by threatening to make known something which the victim wants to keep secret.
noun
the act of blackmailing. money got by blackmail.
ˈblackmailer noun
Black Maria (məˈraiə)
a prison van. The policeman took the three suspects to the police station in a Black Maria.
black market
(a place for) the illegal buying and selling, at high prices, of goods that are scarce, rationed etc. coffee on the black market.
black marketeer
a person who sells goods on the black market.
ˈblackout noun
1. a period of darkness produced by putting out all lights. Accidents increase during a blackout.
2. a ban (on news etc). a blackout of news about the coup.
3. a period of unconsciousness. He has had several blackouts during his illness.
4. a brief, temporary loss of memory, as when an actor forgets his/her lines.
5. (also outage) a period of a general power failure.
6. (in the theatre) the putting out of the stage lights at the end of a scene etc.
black sheep
a member of a family or group who is unsatisfactory in some way. My brother is the black sheep of the family.
ˈblacksmith noun
a person who makes and repairs by hand things made of iron. The blacksmith made a new shoe for the horse.
black and blue
badly bruised. After the fight the boy was all black and blue.
black out
to lose consciousness. He blacked out for almost a minute.
in black and white
in writing or print. Would you put that down in black and white?

black·head

n. barro, espinilla, comedón.

blackhead

n comedón m (form), espinilla
References in periodicals archive ?
Even patients with very pale skin can show, at the periphery of the comedone, a little darkness signaling inflammation.
Comedone was not observed in papulopustular rosacea patients but occurred in 51.
Nevertheless, we proposed a disseminated comedone and pitted scar subtype as a complement of AI clinical spectrum.
All dogs in this study showed generalized lesions including alopecia, erythema, folliculitis, comedone, papule, nodules, cellulitis, ulcers, crusted papules, hyper pigmentation, erosions, furunculosis, scale formation, alopecia, pain and edema, pustule with oozing of purulent discharge, matting of hair with scab formation and itching.
This results in comedone formation, an increase in sebum production, proliferation of the bacterium Propionibacterium acnes, and the production of perifollicular inflammation.
The hallmark of TCDD toxicity in humans is chloracne (Panteleyev and Bickers 2006), characterized by epidermal acanthosis and hyperkeratosis, and hyperkeratinization and metaplasia of the sebaceous glands, with comedone formation.
1,2 The giant variant can be a single lesion localising on the eyelid, scalp, or sole, and can easily be confused with basal cell carcinoma, verruca vulgaris, comedone, abscess, furuncle, condylome, keratoacanthoma, and various adenomas.
It is also very useful with acne, blackheads and other comedone eruptions as it quickly and effortlessly removes them without any pain or discomfort.
When an abnormal amount of keratinous (skin) debris collects in the pilosebaceous unit and doesn't get shed properly, this debris creates a plug, called a comedone (co-mee-done).
Retinoids prevent comedone formation by normalizing desquamation of the follicular epithelium.
Eventually, the sebum moves outward to the skin's surface to cause a comedone or clogged pore.
Use a comedone spoon, available from chemists, to release blackheads - this works better if the skin has been warmed to open the pores.