collarette


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Related to collarette: epidermal collarette

collarette

 [kol″er-et´]
1. a narrow rim of loosened keratin overhanging the periphery of a circumscribed skin lesion, attached to the normal surrounding skin.
2. an irregular jagged line dividing the anterior surface of the iris into two regions, the pupillary zone and the ciliary zone.
From Dorland's, 2000.
Biett's collarette a type of papular syphilid in which the central papule is surrounded by a ring of scales.

col·lar·ette

(kol'er-et'),
1. The sinuous, scalloped line in the iris that divides the central pupillary zone from the peripheral ciliary zone and marks the embryonic site of the atrophied minor vascular circle of the iris.
2. Brittle scales encircling eyelashes in staphylococcal blepharitis.
Synonym(s): iris frill

collarette

/col·lar·ette/ (kol″er-et´)
1. a narrow rim of loosened keratin overhanging the periphery of a circumscribed skin lesion, attached to the normal surrounding skin.
2. an irregular jagged line dividing the anterior surface of the iris into two regions.
Dermatology A rim of thickened epidermis in pyogenic granuloma, which is morphologically similar to the pincer-like surrounding epidermis of lichen nitidus and keratoacanthoma
Mycology A rim of cell wall material at the tip of a phialide, resulting from the tip’s rupture during the release of the first phialoconidium

collarette 

Line separating the pupillary zone and the ciliary zone which can be seen on the anterior surface of the iris. In the normal iris it is an irregular circular line lying about 1.5 mm from the pupillary margin (Fig. C13). See minor arterial circle of the iris; crypts of Fuchs.
Fig. C13 Coloboma of the irisenlarge picture
Fig. C13 Coloboma of the iris

collarette

a small collar; see epidermal collarette, iris collarette.
References in periodicals archive ?
Faux fur collarettes, chunky jewellery or a well chosen belt can turn an inexpensive outfit into a show stopper.
While in battle, Blair, a devoted Orangeman, asked for a photo to be sent of the child he had not yet seen wearing a collarette.
As the Orangemen got to within 20 yards of the police lines at least four could be seen removing their collarettes and one reverses it.
The collarette cost 63p - two thirds the price of a 1 [pound sterling] a bottle discount, and the cost of one 30 second TV advertisement is 40 times more than that of a year's worth of PoS ads.
CHEAT: Willie Anderson, 53, has stood down as Worshipful Master; BIG DAY; Album photo of Willie and Norma on their wedding day; PARTY; Couple, who have six children, on their 25th wedding anniversary; MARCH: Anderson with his collarette
If an individual goes to church each Sunday as normal and then turns up one Sunday in the year wearing an Orange collarette, how do you say to him, you can't come in here today.
This begins in May with a teaser collarette and two on-pack promotions will follow.
Before putting on the collarette he turned to his two SDLP council colleagues, Brian Hanvey and Rosaleen Hughes and said: "You are my friends and I respect you and hold you in high esteem.
But he tempered his condemnation of members with the comment: "Let's not forget anyone can buy a second-hand collarette.
Ross Parkhill peers from underneath, proud as punch in the orange collarette that was made especially for him.
He'd show Mr Benn to a cubicle and, after a few moments, our hero would emerge wearing collarette and carrying a banner.
Clearly, there is something in some folks' DNA - a splash of orange, perhaps - that forces them to put on a collarette and hit the streets.