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  2. bifocal vs bifocals

different between bifocal vs bifocals

bifocal

English

Etymology

bi- +? focal

Adjective

bifocal (not comparable)

  1. (optics) Having two focal lengths
  2. (of a correcting lens) Divided into two parts, one of which corrects for distance vision and the other for near vision

Related terms

  • bifocals
  • trifocal

French

Etymology

bi- +? focal

Adjective

bifocal (feminine singular bifocale, masculine plural bifocaux, feminine plural bifocales)

  1. bifocal

Romanian

Etymology

From French bifocal

Adjective

bifocal m or n (feminine singular bifocal?, masculine plural bifocali, feminine and neuter plural bifocale)

  1. bifocal

Declension

Spanish

Pronunciation

  • IPA(key): /bifo?kal/, [bi.fo?kal]

Adjective

bifocal (plural bifocales)

  1. bifocal

bifocal From the web:

  • what bifocal glasses
  • what bifocal glasses means
  • what bifocals do i need
  • what bifocals are used for
  • what's bifocal lenses
  • what's bifocal mean
  • what bifocal contact lenses
  • bifocals what does it do

bifocals

English

Etymology

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.

Noun

bifocals pl (plural only)

  1. Spectacles that have corrective lenses of two different powers; used by people who need both distance and reading glasses.

Related terms

  • bifocal
  • trifocals

Translations

bifocals From the web:

  • what bifocals do i need
  • what bifocals are used for
  • bifocals meaning
  • bifocals what are they
  • bifocals what does it do
  • what do bifocals look like
  • what does bifocals mean
  • what are bifocals glasses
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