Definitions
from the GNU version of the Collaborative International Dictionary of English.
- noun plural eyeglasses whose lenses have two foci, allowing the wearer to see both far and nearby objects clearly. The lenses are partitioned horizontally, the upper and lower parts having different focal lengths.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun
spectacles that havecorrective lenses of twodifferent powers ; used by people who need bothdistance andreading glasses
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun eyeglasses having two focal lengths, one for near vision and the other for far vision
Etymologies
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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As for presbyopia, I'm on my second pair of what used to be called bifocals but are now called something else because they don't have a line across the lens -- continuous?
Graceful Aging (or: Use What Works) Susan Palwick 2007
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I'm totally against the idea of bifocals, since I know I will probably need them in the next few years, but screwing up my ability to do my job would not be a good idea either.
Denver Post: News: Breaking: Local LASIK: Will I or won’t I? « thisisbogus 2010
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As a solution, lots of people turn to multifocal lenses, such as bifocals or varifocals.
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As a solution, lots of people turn to multifocal lenses, such as bifocals or varifocals.
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With the word 'bifocals' staring him in the face, Jelinsky might well have started writing it absently. "
Banquets of the Black Widowers Asimov, Isaac, 1920-1992- 1984
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However, other factors that put people at risk for falls include wearing bifocals, taking several medications, improper footwear, memory problems, a cluttered house, lack of stair railings and grab bars, and poorly lit environments.
Dr. Caroline Cicero: As Autumn Begins, Fall Prevention Awareness Day Will Keep You Off the Ground Dr. Caroline Cicero 2011
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I've had mine for 40 years and just got my first pair of bifocals.
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I've had mine for 40 years and just got my first pair of bifocals.
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"My bifocals work great, my false teeth are comfortable, my hearing aid is adequate, now if they just could make my mind work again."
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However, other factors that put people at risk for falls include wearing bifocals, taking several medications, improper footwear, memory problems, a cluttered house, lack of stair railings and grab bars, and poorly lit environments.
Dr. Caroline Cicero: As Autumn Begins, Fall Prevention Awareness Day Will Keep You Off the Ground Dr. Caroline Cicero 2011
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