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English definition of “bifocals”

bifocals

noun [plural] uk   /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
adjective uk   /-kəl/ us  
bifocal lensesEyesight, glasses and lensesUsing the eyesThe eye and surrounding areaOptics, microscopy and lasers
(Definition of bifocals from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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