1. curved inward like the inside of a bowl or sphere

1. a concave surface or shape

1. to make concave
Usage: transitive

Examples

• The concave mirror focused the light into a bright spot.
• A spoon has a concave surface on one side.
• The concave lens made objects appear smaller.
• Water collected in the concave depression of the rock.
• The artist carved a concave shape into the wood.
• The satellite dish has a concave design to collect signals.
• The potter shaped the clay into a concave bowl.