wallerian degeneration

[ wŏ-lîrē-ən ]

n.

The degeneration of a nerve fiber that has been separated from its nutritive center by injury or disease, characterized by segmentation of the myelin and resulting in atrophy and destruction of the axon.orthograde degeneration secondary degeneration

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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.