varifocal
Britishadjective
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optics having a focus that can vary
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relating to a lens that is graduated to permit any length of vision between near and distant
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
For instance, the leading varifocal lens brand, Varilux, is made by Essilor.
From BBC
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Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.