anticyclone
an.ti.cy.clone \.ant-i-'si--.klo-n\ \-(.)si--'kla:n-ik\ n : a system of winds that rotates about a center of high atmospheric pressu re clockwise in the northern hemisphere and counterclockwise in the southern, that usu. advances at 2 to 3 miles per hour, and that usu. has a diameter of 15 to 25 miles - an.ti.cy.clon.ic aj