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.

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 …

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, …

Jul 13, 2021 · Concave means “curving inward” or “hollow and curved,” like the inside of a bowl, or, more technically, the inside of a partial sphere. A crater is roughly concave.

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

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 …

Master the word "CONCAVE" in English: definitions, translations, synonyms, pronunciations, examples, and grammar insights - all in one complete resource.

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 …

Concave describes an inward curve; its opposite, convex, describes a curve that bulges outward. They are used to describe gentle, subtle curves, like the kinds found in mirrors or lenses.