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°

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.

Concave

Forms that are curved like the inner surface of a hollow sphere or circular arc.

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.
References in periodicals archive ?
For concavity and tertiary construction experiments, pediveligers were allowed to settle in flumes for 24 h.
z], by taking the total measured tool-axis inclination angle and tool concavity angle into account:
If, however, u's consumption today is below consumption in the loss state, then increased concavity of the utility function will decrease the optimal level of self-insurance in order to save on self-insurance costs and thereby raise consumption today.
p] was compared with the deflector parabolic concavity radius [r.
Hypandrium of two pieces, posterior one concave as illustrated, each half projected posteriorly, distally bent outwards at right angle, distally acuminate; each half with a short, acuminate projection on inner side, directed posteriorly, at the start of the concavity, this with a sclerotized, transverse area, at the anterior end of the concavity (Fig.
65 in SL; caudal fin rounded to truncate in females and moderately to strongly lunate in males, caudal concavity as great as 0.
Latarjet, (44) iliac crest bone graft (ICBG), (26) or allograft (45) procedures could be considered to reconstitute normal bony anatomy and concavity of the glenoid.
Tergum 10 mostly membranous, forming a small concavity below epiproct, and a few small spines on either side of the concavity.
We assume without loss of generality that the involved concavity and convexity constants are equal to 1.
Hence, by the concavity and monotonicity of the logarithm,
Even in fading channels, it can be shown that the concavity of the average ROC is preserved.
Weir: Generalized concavity and duality, in Generalized Concavity in Optimization and Economics (S.