ALL meanings of trifocal
tri·fo·cal
T t - adjective trifocal Optics. having three foci. 1
- adjective trifocal (of an eyeglass lens) having three portions, one for near, one for intermediate, and one for far vision. 1
- noun trifocal trifocals, eyeglasses with trifocal lenses. 1
- adjective trifocal having three focuses 0
- adjective trifocal having three focal lengths 0
- noun trifocal glasses with trifocal lenses 0
- adjective trifocal adjusted to three different focal lengths 0
- noun trifocal 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) 0