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concave
[ adjective verb kon-keyv, kon-keyv; noun kon-keyv ]
adjective
- curved like a segment of the interior of a circle or hollow sphere; hollow and curved. Compare convex ( def 1 ).
- 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
/ kŏn′kāv′ /
- Curved inward, like the inside of a circle or sphere.
Derived Forms
- ˈconcavely, adverb
- ˈconcaveness, noun
Other Words From
- con·cavely adverb
- con·caveness noun
- subcon·cave adjective
- subcon·cavely adverb
- subcon·caveness noun
Word History and Origins
Word History and Origins
Origin of concave1
Example Sentences
The concave metal strip starts higher under the heel, then swoops low under the forefoot before rounding up again under the toe, resulting in a springy ride that increases its rebound the harder you run.
Burin says a concave front could theoretically create a faster flow of water in the center, and it would also likely create more side-to-side stability.
The concave leather exterior gives your headphones and ear pads a safe and cozy place to sleep, and the cork feet prevent them from being knocked over.
A concave blade will easily make big cuts through softer materials.
This wireless keyboard has concave keys to snugly fit your fingertips, creating an ultra-comfortable typing experience.
Sagging milk-filled breasts must appear perky; the once-swollen abdomen is made concave.
Ellis's patent boot studs to save the sole, and the Euknemida, or concave-convex fastening springs, are the latest novelties.
Lamb turned the paper over and winked at himself in the concave mirror of the semi-circle of bar.
The seat should slope downward a little toward the back, be slightly concave, and have rounded edges in front.
Of the two broader sides one was concave, the other convex; while of the narrower sides one was flat and the other indented.
His hair is long and black, and in his throat is a thick concave bone.
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