concave
/kɑnˈkeɪv/
adjective
- Curved inward like the inside of a bowl or a cave.
- The ancient bowl had a beautiful concave shape.
- The mirror was concave, making my reflection look larger.
- The spoon has a concave surface that holds the soup.
noun
- A concave surface, curve, or shape.
- The concave of the hill created a natural amphitheater.
- The artist studied the concaves and convexes of the sculpture.
- The lens has a slight concave on one side.