passing outward from a zone or region.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
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.
[L. zona, zone, + fugio, to flee]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012