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1. Pertaining to or characterized by natriuresis. 2. A substance that increases urinary excretion of sodium, usually as a result of decreased tubular reabsorption of sodium ions from glomerular filtrate.
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n.
an agent that promotes the excretion of sodium salts in the urine. Most diuretic are natriuretics.
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na·tri·uret·ic (na″tre-u-retґik) 1. pertaining to, characterized by, or promoting natriuresis. 2. an agent that promotes natriuresis.Medical dictionary. 2011.