konveksa

Etymology
From.

Adjective

 * 1) Curved or bowed outward like the outside of a bowl or sphere or circle;,.
 * konveksaj kolonoj.
 * 1)  Arranged such that for any two points in the set, a straight line between the two points is contained within the set.
 * 2)  Having an epigraph which is a convex set.