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bifocal

[ bahy-foh-kuhl, bahy-foh- ]
/ baɪˈfoʊ kəl, ˈbaɪˌfoʊ- /
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See synonyms for: bifocal / bifocals on Thesaurus.com

adjective
Chiefly Optics. having two foci.
(of an eyeglass or contact lens) having two portions, one for near and one for far vision.
noun
bifocals, bifocal eyeglasses or contact lenses.
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Origin of bifocal

An Americanism dating back to 1885–90; bi-1 + focal
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use bifocal in a sentence

British Dictionary definitions for bifocal

bifocal
/ (baɪˈfəʊkəl) /

adjective
optics having two different focuses
relating to a compound lens permitting near and distant vision
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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