bifocal

[ bahy-foh-kuhl, bahy-foh- ]

/ baɪˈfoʊ kəl, ˈbaɪˌfoʊ- /

SEE SYNONYMS FOR bifocal 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.

Origin of bifocal

An Americanism dating back to 1885–90; bi-¹ + focal

Words nearby bifocal

bifid tongue, bifilar, biflagellate, biflex, bifluoride, bifocal, bifocaled, bifocal lens, bifocals, bifold, bifoliate

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for bifocal

His most direct contribution to medicine was the invention for his own use of bifocal eyeglasses.
Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 1 "Franciscans" to "French Language"|Various
Any other fish or mammal would have been just as likely as Anableps to begin the development of a bifocal eye.
Parallel Paths|Thomas William Rolleston

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

Medical definitions for bifocal

bifocal

[ bī-fō′kəl, bī′fō′- ]

adj.

Having two focal lengths.

Having one section that corrects for distant vision and another that corrects for near vision.

单词	bifocal
释义	bifocal [ bahy-foh-kuhl, bahy-foh- ] / baɪˈfoʊ kəl, ˈbaɪˌfoʊ- / SEE SYNONYMS FOR bifocal 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. Origin of bifocal An Americanism dating back to 1885–90; bi-¹ + focal Words nearby bifocal bifid tongue, bifilar, biflagellate, biflex, bifluoride, bifocal, bifocaled, bifocal lens, bifocals, bifold, bifoliate Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for bifocal His most direct contribution to medicine was the invention for his own use of bifocal eyeglasses. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 1 "Franciscans" to "French Language"\|Various Any other fish or mammal would have been just as likely as Anableps to begin the development of a bifocal eye. Parallel Paths\|Thomas William Rolleston 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 Words related to bifocal glass, spectacles, contact, optic, monocle, meniscus, trifocal Medical definitions for bifocal bifocal [ bī-fō′kəl, bī′fō′- ] adj. Having two focal lengths. Having one section that corrects for distant vision and another that corrects for near vision. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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bifocal

adjective

noun

Origin of bifocal

Words nearby bifocal

Example sentences from the Web for bifocal

British Dictionary definitions for bifocal

adjective

Words related to bifocal

Medical definitions for bifocal

adj.