convex

US /ˈkɑːn.veks/
UK /ˈkɑːn.veks/
"convex" picture
1.

convexo

having an outline or surface curved like the exterior of a circle or sphere

:
The lens of the magnifying glass is convex.
A lente da lupa é convexa.
The surface of the mirror was slightly convex.
A superfície do espelho era ligeiramente convexa.