hypertonicity

/ˌhaɪpərtoʊˈnɪsəti/
noun
  1. The state or quality of being hypertonic, especially in reference to a solution having a higher concentration of solutes than another.
    • In biology class, we studied how hypertonicity affects cell shape.
    • The hypertonicity of the seawater makes it unsuitable for drinking.
    • The doctor explained that the hypertonicity of the IV fluid helps reduce brain swelling.
  2. Excessive muscle tone or stiffness.
    • Hypertonicity in the arms can make everyday tasks like dressing very challenging.
    • Children with cerebral palsy often experience hypertonicity in their legs.
    • The therapist used gentle massage to reduce hypertonicity in the patient's shoulders.
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