bifocals
Spectacles that have corrective lenses of two different powersSpectacles that have corrective lenses of two different powers; used by people who need both distance and reading glasses.
» Who invented bifocals?
Кто изобрёл бифокальные очки?
Meaning
1 senses(plural, plural only)Spectacles that have corrective lenses of two different powers; used by people who need both distance and reading glasses.
Bifokalbrille, Zweistärkenbrille
- (plural) eyeglasses having two focal lengths, one for near vision and the other for far vision
Examples
5 sentencesWho invented bifocals?
ruКто изобрёл бифокальные очки?
Tom wears bifocals.
It's time for me to get bifocals.
Lenses with two distinct optical powers are also called "bifocals".
ruДвухфокусные линзы также называются бифокальными.
Tom needs bifocals.
Translations
3 languagesBy meaning 1
Origin
From bi- + focal (see focus), coined in 1824 by John Isaac Hawkins, inventor of trifocals.From bi- + focal (see focus), coined in 1824 by John Isaac Hawkins, inventor of trifocals. When the concept of bifocals was originally conceived by Benjamin Franklin, he called them double spectacles.
Wiktionary, CC BY-SA 4.0 · source
Forms
plural: bifocalses| Singular | bifocals |
|---|---|
| Plural | bifocalses |
regular