1. 
   Crotonic
   Cro·ton'ic adjective Of or pertaining to, or derived from, a plant of the genus Croton , or from croton oil. Crotonic acid (Chemistry) , a white crystalline organic acid, C ₃ H ₅ .CO ₂ H, of th...
   Found op http://www.encyclo.co.uk/webster/C/193
   
   
2. 
   Crotonic
   • (a.) Of or pertaining to, or derived from, a plant of the genus Croton, or from croton oil.
   Found op http://thinkexist.com/dictionary/meaning/crotonic/
   
   

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