risus caninus

Medical Dictionary

risus caninus ri·sus ca·ni·nus (rī'səs kā-nī'nəs)
n.
The semblance of a grin caused by facial spasm, as in tetanus. Also called canine spasm, cynic spasm, sardonic grin.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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