|1.||having one side convex and the other side concave|
|2.||Compare concavo-convex (of a lens) having a convex face with greater curvature than the concave face|
|an extraordinary or unusual thing, person, or event; an exceptional example or instance.|
|a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.|
convexo-concave con·vex·o-con·cave (kən-věk'sō-kən-kāv')
Being convex on one side and concave on the other.
Having greater curvature on the convex side than on the concave side. Used of a lens.