1) Hypertonic 
Synonym for hypertonic ... Of a fluid, sufficiently concentrated to cause osmotic shrinkage of cells immersed in it. Note that a mildly hyperosmotic solution is not necessarily hypertonic for viable cells, that are capable of regulating their volumes by active transport. ... See: hypotonic, isotonic. ... (18 Nov 1997) ... 
(hi″pәr-i″so-ton´ik) denoting a solution containing more than 0.45 per cent salt, in which exosmosis causes crenation (abnormal notching around the edges) of erythrocytes.
Type: Term Pronunciation: hī′pĕr-ī′sō-ton′ik Synonyms: hypertonic