[ triz-muh s, tris- ]
/ ˈtrɪz məs, ˈtrɪs- /

noun, plural tris·mus·es. Pathology.

a spasm of the jaw muscles that makes it difficult to open the mouth.

Origin of trismus

1685–95; < New Latin < Greek trismós a grinding


tris·mic, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for trismus

British Dictionary definitions for trismus

/ (ˈtrɪzməs) /


pathol the state or condition of being unable to open the mouth because of sustained contractions of the jaw muscles, caused by a form of tetanusNontechnical name: lockjaw

Derived forms of trismus

trismic, adjective

Word Origin for trismus

C17: from New Latin, from Greek trismos a grinding
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for trismus

[ trĭzməs ]


A firm closing of the jaw due to tonic spasm of the muscles of mastication from disease of the motor branch of the trigeminal nerve. It is usually associated with general tetanus.lockjaw
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.