concave

  1. Adjective.  curved like the inner surface of a sphere or bowl.
  2. Noun.  A concave surface or curve.
  3. Noun.  The vault of the sky.
  4. Noun.  One of the celestial spheres of the Ptolemaic or geocentric model of the world.
  5. Noun.  (industry) An element of a curved grid used to separate desirable material from tailings or chaff in mining and harvesting.
  6. Noun.  (surfing) An indentation running along the base of a surfboard, intended to increase lift.
  7. Noun.  (skateboarding) An indented area on the top of a skateboard, providing a position for foot placement and increasing board strength.
  8. Verb.  To render concave, or increase the degree of concavity.

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This entry was last updated on RefTopia from its source on 3/20/2012.