hy·​per·​to·​nic·​i·​ty ˌhī-pər-tə-ˈni-sə-tē How to pronounce hypertonicity (audio)
plural hypertonicities
: the condition of being hypertonic
especially : hypertonia

Example Sentences

Recent Examples on the Web Pelvic floor disorders happen when the supportive muscles in that area are either too tight (known as hypertonicity) or too weak and stretched out (known as hypotonicity). Claire Sibonney, SELF, 29 Sep. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'hypertonicity.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History

First Known Use

1886, in the meaning defined above

Time Traveler
The first known use of hypertonicity was in 1886

Dictionary Entries Near hypertonicity

Cite this Entry

“Hypertonicity.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hypertonicity. Accessed 26 Jan. 2023.

Medical Definition


hy·​per·​to·​nic·​i·​ty -tə-ˈnis-ət-ē How to pronounce hypertonicity (audio)
plural hypertonicities
: the quality or state of being hypertonic
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