Path. [mod.L., ad. Gr. τρισμός = τριγμός a scream, also a grinding, rasping.] Tetanus or tonic spasm of the muscles of the neck and lower jaw, causing the jaw to close rigidly; lock-jaw. (Rarely extended to tetanus in general.)

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1693.  trans. Blancard’s Phys. Dict. (ed. 2), Trismus, the grinding of the Teeth, or a Convulsion of a Muscle of the Temples, whereby the Teeth gnash whether one will or no.

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1704.  in J. Harris, Lex. Techn., I.

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1806.  Med. Jrnl., XV. 44. This man had a slight cut in the palm of one of his hands … which was healed several days prior to his seizure with trismus.

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1897.  Trans. Amer. Pediatric Soc., IX. 77. There is trismus of the hands and feet.

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