concave

(redirected from concave face)
Also found in: Dictionary, Thesaurus, Medical, Financial.

concave

1. Physics having one or two surfaces curved or ground in the shape of a section of the interior of a sphere, paraboloid, etc.
2. Maths (of a polygon) containing an interior angle greater than 180°

concave

(kong-kayv , kong -kayv) Curving inward. A concave mirror converges light. A biconcave or planoconcave lens, thinner in the middle than at the edges, has a diverging action.

Concave

Forms that are curved like the inner surface of a hollow sphere or circular arc.

concave

[′kän‚kāv]
(science and technology)
Having a curved form which bulges inward resembling the interior of a sphere or cylinder or a section of these bodies.
References in periodicals archive ?
Two stones contrast in New Penwith, 1974: One is squarish with a concave face and large opening, while the other is more rounded, with a smaller hole in its convex surface.
Durability of both the porcelain and the stoneware coins was a primary concern, so all Meissen notgeld designs incorporated raised rims and concave faces. These features protected the relief elements of the coins from scratches and other damage.
The elastic membranes of their concave faces pulse silently in hypnotic unison, transitioning from slow, soft bulging to quick, shallow popping in and out, like the rhythmic contractions of a diaphragm.