curved like the inner surface of a sphere or bowl / (geometry, not comparable, of a polygon) not convex; having at least one internal angle greater than 180 degrees.

A concave surface or curve. / The vault of the sky. / One of the celestial spheres of the Ptolemaic or geocentric model of the world.

To render concave, or increase the degree of concavity.

the state of being concave; concavity

In a concave manner.

simple past tense and past participle of concave

plural of concave

Third-person singular simple present indicative form of concave

plural of concaver

A person employed to give a concave shape to razors as they are manufactured.