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concave
[kon-keyv, kon-keyv, kon-keyv]
adjective
curved like a segment of the interior of a circle or hollow sphere; hollow and curved.
Geometry.(of a polygon) having at least one interior angle greater than 180°.
Obsolete.hollow.
noun
a concave surface, part, line, or thing.
Machinery.a concave piece, as one against which a drum rotates.
verb (used with object)
to make concave.
concave
/ ˈkɒnkeɪv, kɒnˈkeɪv /
adjective
curving inwards
physics having one or two surfaces curved or ground in the shape of a section of the interior of a sphere, paraboloid, etc
a concave lens
maths (of a polygon) containing an interior angle greater than 180°
an obsolete word for hollow
verb
(tr) to make concave
concave
Curved inward, like the inside of a circle or sphere.
Other Word Forms
- concavely adverb
- concaveness noun
- subconcave adjective
- subconcavely adverb
- subconcaveness noun
- ˈDzԳ adverb
- ˈDzԳԱ noun
Word History and Origins
Word History and Origins
Origin of concave1
Example Sentences
The digital replica shows that some of the boilers are concave, which suggests they were still operating as they were plunged into the water.
Mr Wangchuk studied mechanical engineering after a relative noticed his experiments with concave mirrors to brighten dark buildings and cook food.
“My chest was concave trying to pull in breath.”
An actor playing an ancient Greek priestess holds a silver torch containing highly combustible materials over a concave mirror.
It was a little bit concave, like a bowl.
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