concave
Use Concave in a sentence
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keɪv; adjective
1.
2.
Geometry. (of a polygon) having at least one interior angle greater than 180°.
3.
Obsolete, hollow.
noun
4.
a concave surface, part, line, or thing.
5.
Machinery. a concave piece, as one against which a drum rotates.
00:10
Concave
is one of our favorite verbs.
So is subtilize. Does it mean:
| to introduce subtleties into or argue subtly about. |
| to run away hurriedly; flee. |
verb (used with object)
6.
to make concave.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
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Based on the Random House Dictionary, © Random House, Inc. 2013.
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|
Link To concave
Collins
World English Dictionary
concave (ˈkɒnkeɪv, kɒnˈkeɪv) ![[Click for IPA pronunciation guide]](http://static.sfdict.com/dictstatic/g/d/dictionary_questionbutton_default.gif) | |
| —adj | |
| 1. | curving inwards |
| 2. | 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 |
| 3. | maths (of a polygon) containing an interior angle greater than 180° |
| 4. | an obsolete word for hollow |
| —vb | |
| 5. | (tr) to make concave |
| [C15: from Latin concavus arched, from cavus hollow] | |
| 'concavely | |
| —adv | |
| 'concaveness | |
| —n | |
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History
concave
1570s, from L. concavus "hollow," from com- intensive prefix + cavus "hollow" (see cave (n.)).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary
concave con·cave (kŏn-kāv', kŏn'kāv')
adj.
Curved like the inner surface of a sphere. n.
A concave surface, structure, or line.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
| concave (kŏn'kāv') Pronunciation Key
Curved inward, like the inside of a circle or sphere. |
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Example sentences
Geodesic surfaces can be curved, zig-zag, concave-convex with each other in space.
They come in nine positive-negative pairs: one with a convex top and a drainage trough around the rim, the other concave.
Solid rubber outsole with concave lugs provide all-terrain grip and traction.
Moreover, concave-shaped heads were not bird resistant unless the heads faced downwards.
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