Dictionary

1trifocal

adjective tri·fo·cal \(ˌ)trī-ˈfō-kəl\

Definition of TRIFOCAL

:  having three focal lengths

First Known Use of TRIFOCAL

1826

Rhymes with TRIFOCAL

2trifocal

noun

Definition of TRIFOCAL

1
plural :  eyeglasses with trifocal lenses
2
:  a trifocal glass or lens

First Known Use of TRIFOCAL

1899

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