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1. A tight closure.
2. To effect a tight closure.
Farlex Partner Medical Dictionary © Farlex 2012


Heart surgery A clinical trial–Simple & Effective Arterial Closure Study which evaluated the safety and efficacy of the Duett vascular sealing device


Public health Any air- and/or water-tight closure on a product–blood components, medications intended to maintain a product sterilely until used by a consumer; products with broken seals should be discarded
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

staining, fluorescein 

The artificial coloration of tissue by fluorescein. Under ultraviolet illumination, it stains dead or degenerated corneal epithelial cells due to abrasions, old age or following inadequate contact lens fit, a yellowish-green colour. It also stains the tears, thus facilitating the evaluation of tear drainage or the blood flow through the retina and choroid when injected intravenously. Corneal staining resulting from contact lens wear may present in various shapes, locations, depths or severity. A very common form is punctate staining as appears in punctate epithelial keratitis. There may be arcuate stains located in different parts of the cornea, some inferiorly (called inferior epithelial arcuate lesions) or superiorly (called superior epithelial arcuate lesions, acronym: SEAL, or epithelial splitting), which usually do not give rise to symptoms and appear mainly with soft or silicone hydrogel lenses. A very severe form of staining is called epithelial plug. It is typically round in shape and represents a loss of the full thickness of the epithelium. Corneal staining resulting from contact lens wear typically disappears after cessation of contact lens wear. See fluorescein angiography; dye dilution test; fluorescein test.
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann


1. Tight closure.
2. To effect a tight closure.
Medical Dictionary for the Dental Professions © Farlex 2012

Patient discussion about seal


A. honey has an antimicrobial activity due to it's acidity, osmotic power and hydrogen peroxide. about MRSA - there is a New Zealandic research about a type of honey that is effective against infections of MRSA. but it's only one research and another investigation is required.

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References in periodicals archive ?
The areawas sealed off yesterday while officers carried out a search of the scene, which borders parkland and a children's playground.
Police mounted a hunt for the attacker following the incident and sealed off a number of streets around the estate.
A MAN is being questioned after a bomb scare resulted in parts of Birmingham being sealed off.
A narrow road off the Shillinghill Road between Markethill and Glenanne in Co Armagh was sealed off and PSNI forensics officers could be seen searching the area for most of the day.
The reporter of the National Iraqi News Agency / NINA / said that "the security forces sealed off, since this morning, all the roads leading to the Green Zone, from Karada Mariam leading to the gates of / Planning ministry / and / legislation gate /, and from /Karrada outside / the suspension bridge gate/, Gateway of / Harithiyah /.
Last night, a murder inquiry was under way and crime investigators sealed off part of Market Street, behind the town's High Street.
LIBERIAN security forces have sealed off a seaside slum in the capital Monrovia in the latest effort to stop the spread of Ebola, setting off protests by angry residents.
Israeli authorities on Sunday sealed off the border crossings with the West
Turned from - Page 1 the scene in Dunford Road near the cemetery and the area sealed off.
A few stones fell late on Saturday from the Arch of Venus, a site that was already sealed off from visitors, dpa quoted conservation authorities as saying.
A METRO station was sealed off as police probed a death.