Trifocal lens
trifocal lens tri·fo·cal lens (trī-fō’kəl, trī’fō’-)
n.
A lens having one section that corrects for distant vision, a second section that corrects for intermediate vision, and a third that corrects for near vision.
Read Also:
- Trifold
adjective 1. triple; threefold. 2. having three parts: a trifold screen. adjective 1. a less common word for triple adjective having three parts; threefold, triple Usage Note also as noun
- Trifoliate
adjective 1. having three leaflets, lobes, or foils; trefoil. 2. Botany. trifoliolate. adjective 1. having three leaves, leaflike parts, or (of a compound leaf) leaflets
- Trifoliate-orange
noun 1. a spiny, Chinese orange tree, Poncirus trifoliata, used as a stock in grafting and for hedges.
- Trifoliolate
[trahy-foh-lee-uh-leyt] /traɪˈfoʊ li əˌleɪt/ adjective, Botany. 1. having three leaflets, as a compound leaf. 2. having leaves with three leaflets, as a plant.
- Trifolium
noun 1. any leguminous plant of the temperate genus Trifolium, having leaves divided into three leaflets and dense heads of small white, yellow, red, or purple flowers: includes the clovers and trefoils