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natriuretic factor
na·tri·u·ret·ic fac·tor


noun 
Definition:
 
chemical associated with heart failure: a peptide substance found in raised quantities in the blood of somebody suffering from long-term heart failure. It causes arteries to widen and urine output to increase.
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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