Pronunciation: (an"tē-sī'klōn, an"tī-), [key]
a circulation of winds around a central region of high atmospheric pressure, clockwise in the Northern Hemisphere, counterclockwise in the Southern Hemisphere. Cf. cyclone (def. 1), high (def. 41).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.