opacity

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opacity

 [o-pas´ĭ-te]
1. the condition of being opaque.
2. an opaque area.

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]

opacity

/opac·i·ty/ (o-pas´it-e)
1. the condition of being opaque.
2. an opaque area.

opacity

[ōpas′itē]
Etymology: L, opacitus, shadiness
pertaining to an opaque quality of a substance or object, such as cataract opacity.

opacity

Medtalk A clouded or opaque area. See Corneal opacity.

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]

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.

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]

opacity

1. the condition of being opaque, e.g. corneal opacity, lenticular opacity.
2. an opaque area.
3. radiopacity is the capacity of a substance to absorb radiation, rather than permit its passage.
References in periodicals archive ?
Most of the time, opacities are limited to the incisal or cuspal one third than the cervical one third.
Enamel opacities may occur adjacent to restoration margins.
9 The yellow and brown opacities present as microscopically porous, with a higher clinical risk of breakdown than that of the white opacities.
The creamy-white opacities are present in the in- ternal part of the enamel.
Within one patient, intact opacities can be found on one molar; while in another molar large parts of the enamel break down soon after eruption.
The absence of first permanent molars in a healthy dentition associated to the presence of demarcated opacities on the incisors is suspected for MIH.
Capsular remnants are best seen using retro-illumination from the fundus, where the opacities appear black against the red fundal glow.
For comparison of the severity of MIH between the genders and age groups, the three groups of MIH lesions (opacities, enamel breakdown and atypical restorations) were recoded into two severity levels: opacities and disintegration defects.
8%) had only demarcated opacities, but no breakdown or atypical restorations.
Distribution of opacities and disintegration defects among the children with a different number of affected teeth and divided between genders is presented in the Table 3.
Demarcated opacities made out the largest part of the teeth with the lesions (2.
Similar to other studies, the most common lesions in Lithuania were mild demarcated opacities.