concave

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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 ?
In general, risk aversion means that (cardinal) utility is concavely increasing in monetary gains' CRRA relies on U([PI]) = [[PI].
The concavely acuminate ultimate segments separate this species from Adiantum peruvianum, the most similar species.
In Titanatemnus gigas it is almost like a spoon; in Oratemnus punctatus and Cyclatemnus centralis it has the same shape but is bowed concavely (Figs.