Meaning Of The Word Trifocal

Real Dictionary

What's the definition of Trifocal? Find Trifocal meanings, definitions and more at the Real Dictionary online.

Trifocal Meaning

Trifocal Definition
Trifocal Definition

What's The Definition Of Trifocal?

trifocal in American English
a lens like a bifocal but with an additional narrow area ground to adjust the intermediate focus for objects at c. 76 cm (c. 30 in)
adjusted to three different focal lengths
adjective: having three foci
noun

trifocal in British English
adjective: having three focuses
noun: glasses with trifocal lenses

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