risus sardonicus
noun
ri·sus sar·do·ni·cus
ˈrī-səs-ˌsär-ˈdän-i-kəs 
ˈrē-
ˈrē-
: a facial expression characterized by raised eyebrows and grinning distortion of the face resulting from spasm of facial muscles especially in tetanus
Cite this Entry
“Risus sardonicus.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/risus%20sardonicus. Accessed 1 Mar. 2025.
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