- concave on one side and convex on the other
- Optics designating a lens whose concave face has a greater degree of curvature than its convex face, so that the lens is thinnest in the middle
See concavo-convex in American Heritage Dictionary 4
- Concave on one side and convex on the other.
- Having greater curvature on the concave side than on the convex side. Used of a lens.
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