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English definition of “bifocals”

bifocals

noun [plural]     /ˌbaɪˈfəʊ.kəlz/ US  /-ˈfoʊ-/
glasses with lenses that are divided into two parts. The upper half is for looking at things far away and the lower half is for reading or for looking at things that are near.Eyesight, glasses and lensesUsing the eyesThe eye and surrounding areaOptics, microscopy and lasers bifocal     /-kəl/ adjective bifocal lensesEyesight, glasses and lensesUsing the eyesThe eye and surrounding areaOptics, microscopy and lasers
(Definition of bifocals noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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