convex

con·vex

adj \kän-ˈveks; ˈkän-ˌ, kən-ˈ\

Definition of CONVEX

: curved or rounded like the exterior of a sphere or circle <convex lenses are used to correct for farsightedness>

—con·vex·i·ty \kən-ˈvek-sət-ē, kän-\ noun, plural con·vex·i·ties