from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A deficiency of sodium in the blood.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An abnormally low concentration of sodium (or salt) in blood plasma.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. abnormally low level of sodium in the blood; associated with dehydration
hypo- + New Latin natrium, sodium; see hypernatremia + -emia.(American Heritage® Dictionary of the English Language, Fourth Edition)
From hypo- + Latin natrium ("sodium") + New Latin -emia. (Wiktionary)