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
Francis Kokoroko, New York Times, 3 May 2025
One side of the chest piece is flat and called the diaphragm, and the other is concave and called the bell.4
The flat or diaphragm side of the chest piece is usually used to listen to heart sounds.
—Patty Weasler, Rn, Bsn, Verywell Health, 13 Feb. 2025
Wes Siler, Outside Online, 24 Apr. 2025
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
See All Example Sentences for concave
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Adjective
With a 5,000-seat auditorium and a concave roof referencing the curve of Asante royal stools, it was intended to be much more than just a cathedral.
—Francis Kokoroko, New York Times, 3 May 2025
One side of the chest piece is flat and called the diaphragm, and the other is concave and called the bell.4
The flat or diaphragm side of the chest piece is usually used to listen to heart sounds.
—Patty Weasler, Rn, Bsn, Verywell Health, 13 Feb. 2025
Noun
Ones that use a concave shape from the edge to spine prioritize slicing performance over splitting.
—Wes Siler, Outside Online, 24 Apr. 2025
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
See All Example Sentences for concave
Cite this Entry
“Concave.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/concave. Accessed 29 May. 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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