bifocal
[ bahy-foh-kuh l, bahy-foh- ]
/ baɪˈfoʊ kəl, ˈbaɪˌfoʊ- /
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.
Words nearby bifocal
bifid tongue,
bifilar,
biflagellate,
biflex,
bifluoride,
bifocal,
bifocal lens,
bifocaled,
bifocals,
bifold,
bifoliate
Example sentences from the Web for bifocal
His most direct contribution to medicine was the invention for his own use of bifocal eyeglasses.
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
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.