Meaning of concave

con•cave

Pronunciation: (adj., v.kon-kāv', kon'kāvn.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. (of a polygon) having at least one interior angle greater than 180°.
  3. hollow.
—n.
  1. a concave surface, part, line, or thing.
  2. a concave piece, as one against which a drum rotates.
—v.t.
  1. to make concave.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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