Definition of "bifocals" [bi•fo•cals]

• Spectacles that have corrective lenses of two different powers; used by people who need both distance and reading glasses (noun)

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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?"
• "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."
• "As a solution, lots of people turn to multifocal lenses, such as bifocals or varifocals."