1
: hollowed or rounded inward like the inside of a bowl
a concave lens
2
: arched in : curving in
—used of the side of a curve or surface on which neighboring normals to the curve or surface converge and on which lies the chord joining two neighboring points of the curve or surface
Examples of concave in a Sentence
Adjective
a concave lens
Recent Examples on the Web
Katharina Kotrba, Forbes, 4 Mar. 2025
The case features three distinct finishes, fine circular brushing on the concave bezel, mirror-polishing on rehaut edge, and sandblasted finishing on the case flanks.
—Bhanu Chopra, Forbes, 5 Mar. 2025
Ari Plachta, Sacramento Bee, 17 Jan. 2025
Samsung Galaxy Ring $399.99 from samsung.com, £399 from samsung.com
Samsung’s take on the smart ring is excellent, with a slick, concave styling that looks and feels great.
—David Phelan, Forbes, 31 Dec. 2024
See All Example Sentences for concave
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Adjective
Its double-curved façade has gentle convex and concave curves that give the impression of movement, as if the ship was gliding through water.
—Katharina Kotrba, Forbes, 4 Mar. 2025
The case features three distinct finishes, fine circular brushing on the concave bezel, mirror-polishing on rehaut edge, and sandblasted finishing on the case flanks.
—Bhanu Chopra, Forbes, 5 Mar. 2025
Noun
The design of a wok induction cooktop features one key difference from a regular induction stovetop: a glass or ceramic concave surface that can balance the round bottom of a wok, rather than a flat one for a flat-bottomed pan.
—Ari Plachta, Sacramento Bee, 17 Jan. 2025
Samsung Galaxy Ring $399.99 from samsung.com, £399 from samsung.com
Samsung’s take on the smart ring is excellent, with a slick, concave styling that looks and feels great.
—David Phelan, Forbes, 31 Dec. 2024
See All Example Sentences for concave
Cite this Entry
“Concave.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/concave. Accessed 28 Mar. 2025.
Copy CitationMedical Definition
concave
adjective
con·cave
kän-ˈkāv, ˈkän-ˌ 
: hollowed or rounded inward like the inside of a bowl
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