Word.ws English Dictionary

trifocals

trifocals noun: spectacles with corrective lenses that have three different powers per eye.

Noun

trifocals pl (plural only)

  1. (plural, plural-only) Spectacles with corrective lenses that have three different powers per eye.

Origin of trifocals

From tri- + focal (see focus). Coined by John Isaac Hawkins, their inventor, in 1826.

Questions about trifocals

What does trifocals mean?
Trifocals means spectacles with corrective lenses that have three different powers per eye.
What part of speech is trifocals?
Trifocals is a noun.

Words near trifocals in the dictionary

  1. trifluxes
  2. triflyl
  3. triflyl azide
  4. trifocal
  5. trifocalization
  6. trifocals
  7. trifoil
  8. trifoils
  9. trifold
  10. trifolds
  11. trifolia

Source and license

Adapted from Wiktionary: trifocals (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “trifocals.” Word.ws, https://word.ws/trifocals. Based on Wiktionary, CC BY-SA 4.0.