Medical Dictionary

risus sardonicus

noun ri·sus sar·do·ni·cus
\ˈrī-səs-ˌsär-ˈdän-i-kəs, ˈrē-\

Medical Definition of RISUS SARDONICUS

:  a facial expression characterized by raised eyebrows and grinning distortion of the face resulting from spasm of facial muscles especially in tetanus

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