ricin
/ˈraɪsɪn/
noun
- A highly poisonous substance found in castor beans, which can be made into a powder or mist and is dangerous if inhaled, swallowed, or injected.
- Scientists study ricin to understand how it attacks cells and to develop antidotes.
- Because ricin is so toxic, it is classified as a potential biological weapon.
- The lab detected traces of ricin in the package sent to the government building.