trifocals
trifocals · trifocalses
Spectacles with corrective lenses that have three different powers per eyeSpectacles with corrective lenses that have three different powers per eye.
Meaning
1 senses(plural, plural only)Spectacles with corrective lenses that have three different powers per eye.
Translations
1 languagesOrigin
From tri- + focal (see focus). Coined by John Isaac Hawkins, their inventor, in 1826.From tri- + focal (see focus). Coined by John Isaac Hawkins, their inventor, in 1826.
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Forms
plural: trifocalses| Singular | trifocals |
|---|---|
| Plural | trifocalses |
regular