convex
/ˈkɒn.vɛks/Definitions
1. adjective
curving outward; having curves that lie outside a circle drawn around the figure or area
“The convex shape of the umbrella made it easy to store.”
2. noun
a curved or curved surface
“The mathematician studied the properties of a convex shape.”
3. verb
to make (something) curved outward
“The designer convexed the edges of the new design.”