concave concave  /kɑn ˈkeɪv/


  • (adj) curving inward

Derived Word(s)


  1. Koilonychia is an abnormal shape of the fingernail where the nail has raised ridges and is thin and concave.
  2. Saramago, who is 84, is an austere man, extremely tall and so lean that he is practically concave.
  3. Automated perimetry: You sit in front of a concave dome and stare at an object in the middle.


  • Plano-Concave Axicons suit laser material processing.

    Featuring one concave conical surface and one plano surface, Plano-Concave Axicons are used in laser material processing to create ring-shaped image along optical axis and non-diffractive approximation of Bessel beam. Units are available in twelve 25.4 mm diameter models with apex angles of 90, 130, 140, 160, 170, or 175°, and either VIS 0° or NIR I coating. When Plano-Concave Axicons are used ...
    on June 17, 2013     Source: ThomasNet


  1. "All the aerodynamic surfaces have been completely updated," explains Aldo Costa, Ferrari Technical Director. "The body is more concave, the engine cover has a different profile to improve the efficiency and resolve some problems we had on...
    on Jan 6, 2008 By: Aldo Costa Source: Fullboost

  2. Author Vladimir Nabokov said in a 1969 New York Times interview that "there should exist a special typographical sign for a smile--some sort of concave mark, a supine round bracket."
    on Mar 13, 2007 By: Vladimir Nabokov Source: CNET

  3. "My body's a real mess. If you look at it in the mirror, it's just completely convex and concave," Taylor said.
    on Nov 20, 2004 By: Elizabeth Taylor Source: Sify

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subordinate subordinate
/sə ˈbɔr də ˌneɪt /