Definition of concave adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

The meaning of CONCAVE is hollowed or rounded inward like the inside of a bowl. How to use concave in a sentence.

Sep 9, 2023 · Concave lenses focus light inside the curve of the lens, while convex lenses focus light using the outer curve. A lens that curves like a “C” (no flat side) is both concave or convex, …

In mathematics, a concave function is one for which the function value at any convex combination of elements in the domain is greater than or equal to that convex combination of those domain …

Concave definition: curved like a segment of the interior of a circle or hollow sphere; hollow and curved.. See examples of CONCAVE used in a sentence.

Add to word list curved inward: a concave lens (Definition of concave from the Cambridge Academic Content Dictionary © Cambridge University Press)

A surface that is concave curves inwards in the middle. ...a concave stomach. ...the concave bottom of an empty hair spray container.

Nov 1, 2025 · concave (comparative more concave, superlative most concave) Curved like the inner surface of a sphere or bowl. (geometry, not comparable, of a polygon) Not convex; having at least …

Definition: Concave The word “concave” means curved inwards or a "cave" inside. Concave shapes are those shapes in which at least two sides are pushed inwards. Can you think of any space object that …

1. curved or hollowed inward like the inside of a circle or sphere. Compare convex (def. 1). 2. (of a polygon) having at least one interior angle greater than 180°. n. 3. a concave surface, part, line, or …