noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   An abnormally high concentration of sodium in blood plasma. uncountable, usually
2. 2
   excessive amounts of sodium in the blood; possibly indicating diabetes insipidus wordnet

Antonyms

All antonyms

hyponatraemiahyponatremia

Etymology

From hyper- + natremia or hyper- + natr- + -emia.

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.