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se·ne·ci·o·sis | \ si-ˌnē-sē-ˈō-səs 
\
\ plural senecioses\ -ˌsēz \
\Medical Definition of seneciosis
: a frequently fatal intoxication especially of livestock feeding on plants of the genus Senecio that is marked by intense acute or chronic necrosis and cirrhosis of the liver
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