con·vex /kɑnˈvɛks; ˈkɑnˌ, kənˈ/
  (a.)中凸的,凸圓的,凸面的凸狀,凸面體,凸透鏡
  con·vex /kɑnˈvɛks; ˈkɑnˌ, kənˈ/ 形容詞
  凸的,凸面的,凸面
  convex
  凸面
  convex
  凸
  Con·vex a.  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.
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  convex
       adj : curving or bulging outward [syn: bulging] [ant: concave]