Definition of hypertonic in English:

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Pronunciation: /ˌhʌɪpəˈtɒnɪk/


1 Biology Having a higher osmotic pressure than a particular fluid, typically a body fluid or intracellular fluid.
Example sentences
  • Vasopressin continued to act in patients excreting isotonic or hypertonic urine, so hypotonic intake must be avoided in them.
  • In hypertonic syndromes the brain compensates by increasing osmoles in the brain cells.
  • Neurologically they are hypertonic and may have frequent episodes of apnea.
2 Physiology Of or in a state of abnormally high muscle tone.
Example sentences
  • Whilst the muscles are not necessarily hypertonic in osteoporosis they are likely to have undergone fibrotic changes.
  • When the nervous system becomes involved, the muscle tendon bundles remain hypertonic and pain reflexes in the area are activated.



Pronunciation: /ˌhʌɪpəˈtəʊnɪə/
sense 2.
Example sentences
  • The springs in this territory are also of a great help in curing cardiovascular diseases like hypertonia.
  • Massive overdose can bring about ginseng abuse syndrome, which is characterized by hypertension, insomnia, hypertonia, and edema.
  • If the patient survives the initial episode, the disorder leads to severe mental and motor retardation, growth failure, hypertonia and seizures.


Pronunciation: /ˌhʌɪpətəˈnɪsɪti/
Example sentences
  • The hypertonicity of the radiopaque agent draws fluid into the bowel to facilitate passage and expulsion of the tenacious meconium.
  • Infant colic is characterized by excessive and inconsolable crying, hypertonicity, and wakefulness, mainly in the evening.
  • This vicious cycle forces the fissure open and prevents healing, which in turn exacerbates the sphincter hypertonicity.

For editors and proofreaders

Line breaks: hyper|ton¦ic

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