trismus
tris·mus
noun \ˈtriz-məs\Definition of TRISMUS
1
: involuntary contraction of the muscles of mastication (as in tetanus or Parkinson's disease)
2
: lockjaw
Origin of TRISMUS
New Latin, from Greek trismos gnashing (of teeth), from trizein to squeak, gnash; akin to Latin stridēre to creak — more at strident
First Known Use: circa 1693
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