bifocal
bifocal — noun
1. glasses made with lenses that give one viewing area for things far away and anot
glasses made with lenses that give one viewing area for things far away and another for reading or other close work
Leo pushed his bifocals up before reading the hotel bill aloud.
push up bifocals before reading small print
After lunch, Antonia cleaned her bifocals with a soft cotton cloth.
The receptionist switched to bifocals when small print became harder to see.
Vivek left his bifocals on the bedside table at the hotel.
- reading glasses
used only for near work, not for distance and near vision together
文法句型
switch to bifocals
put on / take off bifocals
a pair of bifocals
用法筆記
This sense usually appears as the plural noun bifocals when it means the whole pair of glasses. Distinguish it from sense 2, which names one lens rather than the eyewear you wear.
常見錯誤
2. one lens or glass from a bifocal pair, especially when it is being made, replace
one lens or glass from a bifocal pair, especially when it is being made, replaced, or repaired
The optician replaced one bifocal after a deep scratch blurred the reading area.
replace one bifocal
Defne brought a loose bifocal back to the shop for refitting.
The lab cut a thinner bifocal for Mateo's new metal frame.
Ayana held the damaged bifocal against the light and saw a long crack.
- lens
broader everyday word; does not by itself show the two-zone design
- single-vision lens
has one viewing power across the whole lens
文法句型
replace a bifocal
cut a bifocal for + frame
用法筆記
This sense is mainly used by opticians or repair staff when they mean one lens by itself. Distinguish it from sense 1, which names the complete glasses rather than a single part.
常見錯誤
bifocal — adjective
- bifocalpositive
- more bifocalcomparative
- most bifocalsuperlative
1. describing glasses or lenses that have one part for seeing things far away and a
describing glasses or lenses that have one part for seeing things far away and another part for reading or other close tasks
Sivan finally bought bifocal glasses for driving and reading menus.
bifocal glasses for distance and near work
The optician fitted bifocal lenses into Henry's old silver frames.
fit bifocal lenses into frames
Linh prefers bifocal sunglasses when she reads at the beach.
The clinic ordered bifocal safety glasses for the lab staff.
- two-power
technical and less common; highlights the two lens strengths
- single-vision
describes glasses or lenses with one viewing power only
文法句型
bifocal glasses
bifocal lenses
用法筆記
This adjective most often modifies glasses, lenses, or other eyewear. Use it when the two separate viewing areas matter, not when you are naming the whole pair as an object.