bifocal
Having two focal lengthsHaving two focal lengths.
US/bˈaɪfoʊkəl/
» For instance, he invented bifocal lenses because it annoyed him to switch glasses depending on what he wanted to see.
Meaning
2 senses(not comparable)Having two focal lengths.
having two foci
(not comparable)Divided into two parts, one of which corrects for distance vision and the other for near vision.
Examples
1 sentencesFor instance, he invented bifocal lenses because it annoyed him to switch glasses depending on what he wanted to see.
Origin
By surface analysis, bi- + focal, or, by surface analysis, bi- + foc(us) + -al.By surface analysis, bi- + focal, or, by surface analysis, bi- + foc(us) + -al.
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Word family
3 related wordsDerivedbifocality