concave

concave
    adj 1: curving inward [ant: {bulging}, {convex}]
    

Concave \Con"cave\, n. [L. concavum.]
   1. A hollow; an arched vault; a cavity; a recess.
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            Up to the fiery concave towering hight. --Milton.
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   2. (Mech.) A curved sheath or breasting for a revolving
      cylinder or roll.
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Concave \Con"cave\, v. t. [imp. & p. p. {concaved}; p. pr. & vb.
   n. {Concaving}.]
   To make hollow or concave.
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Concave \Con"cave\ (k[o^][ng]*k[=a]*v" or k[o^]n"-; 277), a. [L.
   concavus; con- + cavus hollow: cf. F. concave. See {Cave} a
   hollow.]
   1. Hollow and curved or rounded; vaulted; -- said of the
      interior of a curved surface or line, as of the curve of
      the of the inner surface of an eggshell, in opposition to
      {convex}; as, a concave mirror; the concave arch of the
      sky.
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   2. Hollow; void of contents. [R.]
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            As concave . . . as a worm-eaten nut. --Shak.
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53 Moby Thesaurus words for "concave":
      arched, arciform, arclike, arcual, bandy, boat-shaped, boatlike,
      bowed, bowl-shaped, bowlike, bowllike, cavelike, cavernous,
      concaved, convex, craterlike, cup-shaped, cupped, cymbiform,
      dish-shaped, dished, dishing, dishlike, embowed, funnel-breasted,
      funnel-chested, funnel-shaped, gibbose, gibbous, hollow, hollowed,
      humpbacked, humped, humpy, hunched, hunchy, incurved, incurving,
      incurvous, infundibular, infundibuliform, navicular, naviform,
      oxbow, retiring, retreating, saucer-shaped, scaphoid, scyphate,
      spoonlike, sunk, sunken, vaulted