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