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left to right: biconcave,
plano-concave, and
concavo-convex lenses


 (kŏn-kāv′, kŏn′kāv′)
Curved like the inner surface of a sphere.
A concave surface, structure, or line.
tr.v. con·caved, con·cav·ing, con·caves
To make concave.

[Middle English, from Latin concavus : com-, intensive pref.; see com- + cavus, hollow; see keuə- in Indo-European roots.]

con·cave′ly adv.
con·cave′ness n.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.concaveness - the property possessed by a concave shape
shape, configuration, conformation, contour, form - any spatial attributes (especially as defined by outline); "he could barely make out their shapes"
hollowness - the property of having a sunken area
References in periodicals archive ?
These functions will test the proposed algorithm's performance in the different characteristics of the Pareto front: convexity, concaveness, discreteness, nonuniformity, and multimodality.
3--Is there any differences between female and male teachers' viewpoints on elements of creativity concaveness (fluency, originality, and flexibility) applied in grade seven natural sciences textbook?
It can be said that the preform reheat temperature should be kept at as low as possible in order to ensure high ESCR and burst strength values and to prevent the concaveness at the bottom of the bottle.