Daily Almanac for
Nov 27, 2009
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con•cave



Pronunciation: (
—adj., v.kon-kāv', kon'kāv;
—n.kon'kāv), [key]
—adj., n., v., -caved, -cav•ing.

—adj.
1. curved like a segment of the interior of a circle or hollow sphere; hollow and curved. Cf. convex (def. 1).
2. Geom.(of a polygon) having at least one interior angle greater than 180°.
3. Obs.hollow.

—n.
1. a concave surface, part, line, or thing.
2. Mach.a concave piece, as one against which a drum rotates.

—v.t.
to make concave.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

concatenationconcavity
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