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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

Best or most favorable; ideal.

Causing or tending to cause disruption; revolutionary in changing existing systems.

Successful in producing a desired or intended result; effective.

Most noticeable or important; standing out prominently.

related to or containing water; watery

Gentle, kind, or not harmful (especially of a disease or tumor).