bifocal


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Related to bifocal: bifocal glasses

bi·fo·cal

 (bī-fō′kəl, bī′fō′-)
adj.
1. Having two focal lengths.
2. Having one section that corrects for distant vision and another that corrects for near vision, as an eyeglass lens.
3. Having two distinct goals or objects of attention: a bifocal approach to the problem.
pl.n. bi·fo·cals (bī′fō′kəlz, bī-fō′-)
Eyeglasses with bifocal lenses.

bi·fo′cal·ism n.

bifocal

(baɪˈfəʊkəl)
adj
1. (General Physics) optics having two different focuses
2. (Medicine) relating to a compound lens permitting near and distant vision

bi•fo•cal

(baɪˈfoʊ kəl, ˈbaɪˌfoʊ-)

adj.
1. having two foci.
2. (of an eyeglass or contact lens) having two portions, one for near and one for far vision.
n.
3. bifocals, bifocal eyeglasses.
[1885–90, Amer.]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.bifocal - having two foci; "bifocal eyeglasses"
optics - the branch of physics that studies the physical properties of light
central - in or near a center or constituting a center; the inner area; "a central position"
Translations
ثُنائي البُؤْره
bifokální
bifokal
bifokális
tvískipt gleraugu
dviejų židinių
bifokāls
bifokálny
çift mercekliiki odaklı

bifocal

[ˈbaɪˈfəʊkəl]
A. ADJbifocal
B. N bifocalsgafas fpl bifocales

bifocal

adjBifokal-
n bifocals
plBifokalbrille f

bifocal

(baiˈfəukəl) adjective
(of lenses) having two points of focus, which help people to see things close at hand and things far away.

bi·fo·cal

a. bifocal, referente a dos focos o enfoques.

bifocal

adj bifocal; npl (fam) lentes mpl or gafas bifocales, bifocales mpl or fpl (fam)
References in periodicals archive ?
Dr Maggie Woodhouse, who is leading the bifocal study funded by the Health Foundation, said: "Our study provides further evidence in support of more widespread use of bifocal lenses for this group of young people.
To meet the needs of an aging workforce, company offers two styles of bifocal safety eyewear, each in four diopter strengths: 1.
Another unique product offered by Radians is bifocal eye protection.
Northwest) explores how young people with a heritage society in Haiti and a host society in the province of Quebec negotiate their way through the various complexities of their bifocal social arrangement, and how their choices have consequences for their own emerging identity.
These include bifocal (for close and distance seeing) or multifocal (for close, intermediate and distance viewing) contact lenses.
If these two countries are going to bridge their differences, it will require not just bilateral talks, but a bifocal view of history as well.
For centuries, Christian theology has used bifocal categories, such as "Christians and non-Christians," or "faithful and unbelieving.
The second is the slightly bifocal character of the collection as a whole, which seems undecided whether its subject is the English Revolution or the English (or British) Civil Wars--the slippage can be a little jarring as one moves between different contributions and different parts of the collection.
Adults aged 63 to 90 years who wear bifocal or progressive lenses while walking outside are twice as likely to fall than those who wear single-focus lenses, according to a study published in The Johns Hopkins Medical Letter (February 2003).
Progressive lenses are a wonderful way to do that, without the conspicuous bifocal line or the annoying `jumps' in vision found in other treatment options.
We need bifocal leadership -- clear, short-range thinking and sharp action -- to steer through the downturn, as well as accurate board-level vision and steady nerves.
Some observers of Taves-in-action have noted the bifocal and bilingual aspect of her career and charter: she is equally at home doing history at the Claremont School of Theology and pursuing religious studies in the Claremont Graduate University.