See Also: risus sardonicus(medicine)
risus sardonicus(dictionary)
risus caninus(medicine)
trismus sardonicus(medicine)

risus sardonicus (iou)



risus sardonicus noun phr. L17.
[mod. Latin, from Latin risus laugh (from ridere to laugh) + medieval or mod. Latin sardonicus: cf. SARDONIC.]
Medicine. An involuntary grinning expression resulting from chronic abnormal contraction of the facial muscles, as in tetanus.