Skip to definition.
Get the FREE one-click dictionary software for Windows or the iPhone/iPad and Android apps


Noun: ricin  rI-sin
  1. A toxic protein extracted from castor beans; used as a chemical reagent; can be used as a bioweapon
    "one milligram of ricin can kill an adult";
    - ricin toxin

Derived forms: ricins

Type of: albumen, albumin, toxin

Encyclopedia: Ricin