concavo-convex Meaning, Definition & Usage

  1. adjective satellite concave on one side and convex on the other with the concavity being greater than the convexity

WordNet

Con*ca`vo-con"vex adjective
Definitions
  1. Concave on one side and convex on the other, as an eggshell or a crescent.
  2. (Optics) Specifically, having such a combination of concave and convex sides as makes the focal axis the shortest line between them. See Illust. under Lens.

Webster 1913