Definitions of ricin

n 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
Type of:
albumen, albumin
a simple water-soluble protein found in many animal tissues and liquids
a poisonous substance produced during the metabolism and growth of certain microorganisms and some higher plant and animal species

Sign up, it's free!

Whether you're a student, an educator, or a lifelong learner, Vocabulary.com can put you on the path to systematic vocabulary improvement.