Passing from within any region outward; as in mapping out an area of disturbed sensation, when the stimulus is first applied to the affected region and is carried into the area where sensation is normal. ... Origin: L. Zona, zone, + fugio, to flee ... (05 Mar 2000) ... 
(zo-nif´ә-gәl) passing outward from a zone or region.
zonifugal Moving away from a region or zone, which may occur when a perceived sensation becomes distributed to parts other than the central zone.