(uncountable) The state of being concave / (countable) A concave structure or surface

In a concave manner.

the state of being concave; concavity

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.

To render concave, or increase the degree of concavity.

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

plural of concavity

To make concave

simple past tense and past participle of concave

present participle of concave