iso·​met·​rics | \ ˌī-sə-ˈme-triks How to pronounce isometrics (audio) \

Definition of isometrics

: 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

First Known Use of isometrics

1962, in the meaning defined above

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The first known use of isometrics was in 1962

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Cite this Entry

“Isometrics.” Dictionary, Merriam-Webster, Accessed 11 May. 2021.

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English Language Learners Definition of isometrics

: exercises in which muscles are made stronger by pushing against other muscles or against something that does not move


noun plural but singular or plural in construction
iso·​met·​rics | \ ˌī-sə-ˈme-triks How to pronounce isometrics (audio) \

Medical Definition of isometrics

: isometric exercise or an isometric system of exercises

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Nglish: Translation of isometrics for Spanish Speakers

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