Pronunciation: (kon-kā'vō-kon-veks'), [key]
1. Also,convexo-concave.concave on one side and convex on the other.
2. Optics.pertaining to or noting a lens in which the concave face has a greater degree of curvature than the convex face.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.