hy·​per·​to·​nia ˌhī-pər-ˈtō-nē-ə How to pronounce hypertonia (audio)
: the condition of exhibiting excessive muscular tone or tension

Example Sentences

Recent Examples on the Web Symptoms include agitation, hypertonia (too much muscle tone resulting in stiffness), hypotonia (too little muscle tone resulting in floppiness), tremors, drowsiness, and more. Korin Miller, SELF, 17 Jan. 2019

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

Word History

First Known Use

circa 1842, in the meaning defined above

Time Traveler
The first known use of hypertonia was circa 1842

Dictionary Entries Near hypertonia

Cite this Entry

“Hypertonia.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hypertonia. Accessed 4 Feb. 2023.

Medical Definition


hy·​per·​to·​nia ˌhī-pər-ˈtō-nē-ə How to pronounce hypertonia (audio)
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Commonly Confused Words Quiz

  • vector image of a face with thought expression
  • I went to the ______ store to buy a birthday card.
True or False

Test your knowledge - and maybe learn something along the way.

Solve today's spelling word game by finding as many words as you can with using just 7 letters. Longer words score more points.

Can you make 12 words with 7 letters?