Source : Webster's Revised Unabridged Dictionary (1913)

Anticyclone \An"ti*cy`clone\, n. (Meteorol.)
   A movement of the atmosphere opposite in character, as
   regards direction of the wind and distribution of barometric
   pressure, to that of a cyclone. -- {An`ti*cy*clon"ic}, a. --
   {An`ti*cy*clon"ic*al*ly}, adv.

Source : WordNet®

anticyclone
     n : (meteorology) winds spiraling outward from a high-pressure
         center; circling clockwise in the northern hemisphere and
         counter-clockwise in the southern [ant: {cyclone}]