\Con"vex\, a. [L. convexus vaulted, arched, convex,
concave, fr. convehere to bring together: cf. F. convexe. See
{Vehicle}.]
Rising or swelling into a spherical or rounded form;
regularly protuberant or bulging; -- said of a spherical
surface or curved line when viewed from without, in
opposition to concave.
      Drops of water naturally form themselves into figures
      with a convex surface.                   --Whewell.
{Double convex}, convex on both sides; convexo-convex.

\Con"vex\, n.
A convex body or surface.
      Half heaven's convex glitters with the flame.
                                               --Tickell.
Note: This word was often pronounced con-vex' by early
      writers, as by Milton, and occasionally by later poets.