Surrounding the axon of a nerve. ... Origin: peri-+ G. Axon, axis ... (05 Mar 2000) ... 
Type: Term Pronunciation: per′ē-ak′sō-năl Definitions: 1. Surrounding the axon of a nerve.
periaxonal Surrounding or encircling an axon or a long fiber of a nerve cell (a neuron) that acts somewhat like a fiber-optic cable carrying outgoing (efferent) messages.