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retropulsion
ret·ro·pul·sion [ rèttrō púlshən ]


noun 
Definition:
 
walking backward: a tendency to walk backward involuntarily, associated with Parkinson's disease
[Late 18th century. <retro- after propulsion]
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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