Medical Definition of Phytotoxin
Phytotoxin: A poison in a plant. Abrin and ricin are examples of phytotoxins. Abrin comes from the seeds of a plant called the rosary pea or jequirity pea and ricin from the seeds of the castor bean plant.
Last Editorial Review: 6/9/2016
Back to MedTerms online medical dictionary A-Z List
Need help identifying pills and medications?