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concave

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concave

1. Physics having one or two surfaces curved or ground in the shape of a section of the interior of a sphere, paraboloid, etc.
2. Maths (of a polygon) containing an interior angle greater than 180°
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

concave

(kong-kayv , kong -kayv) Curving inward. A concave mirror converges light. A biconcave or planoconcave lens, thinner in the middle than at the edges, has a diverging action.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006

Concave

Forms that are curved like the inner surface of a hollow sphere or circular arc.
Illustrated Dictionary of Architecture Copyright © 2012, 2002, 1998 by The McGraw-Hill Companies, Inc. All rights reserved

concave

[′kän‚kāv]
(science and technology)
Having a curved form which bulges inward resembling the interior of a sphere or cylinder or a section of these bodies.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
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References in periodicals archive
Although the timing of LL and LU provides details about LL and LU asymmetry, it does not capture the variability of biomechanical adjustments made by individuals with hemiparesis as does the convex, concave, or linear shape of the LL and LU curves.
Thus the (11) and (12) satisfies the conditions of log concave and log convex.
Further on, the authors are trying to combine the low stresses resulted from the use of the concave connection, with the high stability of the convex one (Fig.
So why did Thomas Digges not come up with a viable example of a simple telescope similar to mine, using his combination of a convex lens objective and a concave mirror eyepiece?
The three wide-body Lexion 8000 Series combines with 1700mm wide threshing gear have 1.55sq m of concave exposure, while the narrower 7000 Series combines with a 1420mm wide APS Synflow system have 1.30sq m, which is a tad more than the current range-topping Lexion 780.
I just made up my own: A dimple is concave; a pimple is convex.
In the present study, the number (%) of notch types of glenoid cavity of 63 scapulae, in descending order, were as follows: type 1a (notch in shallow concave form) 24 (38.10%), type 2a (prominent angular notch) 17 (26.98%), type 0 (notch is absent) 13 (20.63%), type 2b (prominent angular notch with prominent protuberance margin) 6 (9.53%), type 1b (notch in shallow concave form with prominent protuberance margin) 3 (4.76%) (Figure 2), (Table 1).
The objective of this article is to demonstrate that combining these two techniques: alar batten grafts and turning over the alar cartilages can be beneficial in the management of concave alar cartilages and provide pleasing long-term esthetic results.
Maybe I should do some concave shelves to go with it?
Worldwide studies of tetrad effect phenomenon in various lithologies and environments have revealed that normalized REE distribution patterns display convex (M-like), concave (W-like) and/or combination of these two forms.
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