isometrics

noun

iso·​met·​rics ˌī-sə-ˈme-triks How to pronounce isometrics (audio)
plural in form but singular or plural in construction
: exercise or a system of exercises in which opposing muscles are so contracted that there is little shortening but a great increase in tone of muscle fibers involved

Word History

First Known Use

1962, in the meaning defined above

Time Traveler
The first known use of isometrics was in 1962

Cite this Entry

“Isometrics.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/isometrics. Accessed 8 Sep. 2025.

Kids Definition

isometrics

singular or plural noun
iso·​met·​rics ˌī-sə-ˈme-triks How to pronounce isometrics (audio)
: exercise or a system of exercises in which force is applied to an unmoving object (as a wall) so that opposing muscles are contracted with little shortening of muscle fibers and no movements of joints

Medical Definition

isometrics

noun, plural in form but singular or plural in construction
iso·​met·​rics ˌī-sə-ˈme-triks How to pronounce isometrics (audio)
: isometric exercise or an isometric system of exercises

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