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concave

adjective

/ˈkɒn.keɪv/

Meaning

curved inward like the inside of a bowl

The mirror had a concave surface that magnified her reflection.

hollow, depressed, sunken, indented, curving-inward

convex, flat, level

concave mirror, concave lens, concave shape, concave surface

having or showing intense passion or enthusiasm

not suitable or safe for eating; not edible

Introducing or using new ideas or methods.

Relating to or having the form of gas.

willing to please others or to accept what they do or say without protest

Causing harm or damage; tending to obstruct or harm progress or development.