adj 1  :  characterized by retrogression  2  :  affecting a period immediately prior to a precipitating cause < amnesia>   3  :  occurring or performed in a direction opposite to the usual direction of conduction or flow < catheterization>  : esp  :  occurring along cell processes toward the cell body < axonal transport>  < degeneration of nerve fibers>  - compare ANTEROGRADE2   ret*ro*grade*ly adv 
 
 
 
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