from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Excretion of excessive amounts of sodium in the urine.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The presence of (excessive) sodium salts in the urine

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. the presence of abnormally large amounts of sodium in the urine


New Latin natriūrēsis : natrium, sodium (from French natron, natron; see natron) + ūrēsis, urination (from Greek ourēsis, from ourein, to urinate; see uretic).
(American Heritage® Dictionary of the English Language, Fourth Edition)


  • [7], [8], [19] Administration of sodium should be started after the onset of postnatal diuresis and natriuresis from the second or third day after birth, or when weight loss of at least 6% of birth weight has been achieved.

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