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Definition of concave:

  1. A hollow place scooped out; the inner surface of any rounded or spherical body- the inside is called the concave surface, the outside the convex surface.
  2. Hollow.


saclike, angular, acetabular, asymmetrical, pouchlike, cavernous, depressed, cupular, bursiform, dished, umbilicate, dish-shaped, planoconcave, pouch-shaped, closed, chunky, indented, cotyloidal, sunken, convex, cupulate, biconcave, concentric, bowl-shaped, concavo-convex, concavo-concave, clean, recessed, bulbous, cuplike, cup-shaped, aerodynamic, cotyloid, bent.

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