Convex (adjective)

1. Curving outward, like the exterior of a sphere or an egg.
2. Having a surface that bulges outwards.
3. Describing a shape that bulges outward.

Origin:

The word convex is derived from the late 16th century from the latin word "convexus" which means "curved outward".

Examples:

1. A convex mirror reflects a wider field of view.
2. The surface of the lens is convex.
3. The shape of the dome is convex.
4. The shape of the bullet is convex.
5. The road ahead was convex and curved outward.