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hypoglossal nerve
hypoglycemia
hypogynous
hypoid gear
hypokalemia
hypolimnion
hypomania
hyponasty
hyponatremia
hyponym
hypophyge
hypophysectomy
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hypopigmentation
hypopituitarism
hypoplasia
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hyponatremia

hy·po·na·tre·mi·a [ hpō nay trmee ə ]


noun 
Definition:
 
low sodium levels in the blood: a lack of sodium in the blood caused by excessive sweating, persistent diarrhea, or overuse of diuretic drugs

[Mid-20th century. <hypo- + modern Latin natrium "sodium" + Greek haima "blood"]
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