meniscus lens

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me·nis·cus lens

a lens having a spheric concave curve on one side and a spheric convex curve on the other.

me·nis·cus lens

(mĕ-nis'kŭs lenz)
A lens having a spheric concave curve on one side and a spheric convex curve on the other.
Synonym(s): meniscus (1) .

me·nis·cus

, pl. menisci (mĕ-niskŭs, -kī) [TA]
1. [TA] Any crescent-shaped structure.
2. A crescent-shaped fibrocartilaginous structure of the knee, the acromio- and sternoclavicular and the temporomandibular joints.
3. The crescentic curvature of the surface of a liquid standing in a narrow vessel.
Synonym(s): meniscus lens.
[G. mēniskos, crescent]