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
Synonyms
Examples of concave in a Sentence
Adjective
a concave lens
Recent Examples on the Web
Maryal Miller Carter, USA TODAY, 31 Mar. 2024
There are four brush heads that are designed to clean different areas, like a round brush for concave tubs and sinks, a pointed brush for grout lines, and a small and large flat brush for floors and walls.
—Clara McMahon, Peoplemag, 30 Jan. 2024
See all Example Sentences for concave 
Adjective
With the concave side of the spoon facing the egg and the rounded side facing your shell, slide the spoon under and around the eggshell, applying a small amount of pressure and separating the shell from the egg.
—Maryal Miller Carter, USA TODAY, 31 Mar. 2024
There are four brush heads that are designed to clean different areas, like a round brush for concave tubs and sinks, a pointed brush for grout lines, and a small and large flat brush for floors and walls.
—Clara McMahon, Peoplemag, 30 Jan. 2024
See all Example Sentences for concave
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'concave.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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Cite this Entry
“Concave.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/concave. Accessed 29 May. 2024.
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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