opacity


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opacity

 [o-pas´ĭ-te]
1. the condition of being opaque.
2. an opaque area.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

o·pac·i·ty

(ō-pas'i-tē),
1. A lack of transparency; an opaque or nontransparent area.
2. On a radiograph, a more transparent area is interpreted as an opacity to x-rays in the body.
3. Mental dullness.
[L. opacitas, shadiness]
Farlex Partner Medical Dictionary © Farlex 2012

opacity

Medtalk A clouded or opaque area. See Corneal opacity.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

o·pac·i·ty

(ō-pas'i-tē)
1. A lack of transparency; an opaque or nontransparent area.
2. On a radiograph, a more transparent area is interpreted as an opacity to x-rays in the body.
3. Mental dullness.
[L. opacitas, shadiness]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

opacity 

The condition of a tissue or structure which is not transparent, or being opaque. The location of an opacity within the eye can be determined with a slit-lamp. It can also be determined using an ophthalmoscope and asking the patient to look up or down. If the opacity moves very little, or not at all, it is situated in the lens. If the opacity moves in the same direction as the eye it is situated in front of the lens and if it moves in the opposite direction it is situated in the vitreous humour. See cataract; muscae volitantes; corneal ulcer.
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann

o·pac·i·ty

(ō-pas'i-tē)
1. On a radiograph, a more transparent area is interpreted as an opacity to x-rays in the body.
2. A lack of transparency.
[L. opacitas, shadiness]
Medical Dictionary for the Dental Professions © Farlex 2012
References in periodicals archive ?
In this study, no correlation was noticed between AMD and lens opacity in the aged population in Hainan Province.
Mammography (Mediolateral Oblique) showing Speculated Opacity in Upper Quadrant with Bread Crumbs Like Microcalcification within Opacity, Tissue Traction and Skin Retraction (BIRADS V).
Previous studies have employed a large number of opacity proxies.
One issue is that existing methods cannot handle the retinal images with vitreous opacity well.
In the present study, total 11 cases of corneal opacity (34.38%) were recorded, out of which three dogs showed bilateral complete corneal opacity due to systemic disease, three dogs showed unilateral stromal opacity with radiating streaks formed due to injury due to barbed wire or dew claw while rubbing, and five dogs showed unilateral opacity except in one (bilateral opacity) with non specific history on day of presentation.
where [D.sub.0]--a measured value of opacity in a set mode at a maximum crank shaft speed,%; t--time (duration) of free acceleration mode, s; a and b--equation coefficients; a x [e.sup.(-bt)]--a component of opacity taking into account free acceleration mode.
For measuring the yellowing index of final MVPs, 200 pm films were applied on Leneta 2A opacity charts in a vacuum table, using a manual film applicator.
These results of the inclusion problem are used in opacity verification in Section 3.
In this work, the influence of recycling steps on the opacity of films of a commercial grade of isotactic polypropylene (i-PP) was studied.
Opacity and the closet; queer tactics in Foucault, Barthes, and Warhol.
Titanium dioxide (Ti02) is a key element for creating whiteness and opacity in paints and coatings.