Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

  

English definition of “ricin”

ricin

noun [U]     /ˈraɪ.sɪn/
a poisonous powder obtained from the bean of the castor oil plant Poisoning and allergy
(Definition of ricin noun from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of ricin

Word of the Day

gastronomy

the art and knowledge involved in preparing and eating good food

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More