trismus

noun
tris·​mus | \ˈtriz-məs \

Definition of trismus 

1 : involuntary contraction of the muscles of mastication (as in tetanus or Parkinson's disease)

2 : lockjaw

First Known Use of trismus

circa 1693, in the meaning defined at sense 1

History and Etymology for trismus

New Latin, from Greek trismos gnashing (of teeth), from trizein to squeak, gnash; akin to Latin stridēre to creak — more at strident

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The first known use of trismus was circa 1693

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trismus

noun
tris·​mus | \ˈtriz-məs \

Medical Definition of trismus 

: spasm of the muscles of mastication resulting from any of various abnormal conditions or diseases (as tetanus)

More from Merriam-Webster on trismus

Britannica.com: Encyclopedia article about trismus

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