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We found 32 dictionaries with English definitions that include the word ricin: Click on the first link on a line below to go directly to a page where "ricin" is defined. General (23 matching dictionaries) ricin: American Heritage Dictionary of the English Language [home, info] ricin: Collins English Dictionary [home, info] ricin: Vocabulary.com [home, info] ricin: Macmillan Dictionary [home, info] ricin: Merriam-Webster's Online Dictionary, 11th Edition [home, info] Ricin, ricin: Wordnik [home, info] ricin: Cambridge Advanced Learner's Dictionary [home, info] Ricin: Wiktionary [home, info] ricin: Compact Oxford English Dictionary [home, info] ricin: Webster's New World College Dictionary, 4th Ed. [home, info] ricin: Infoplease Dictionary [home, info] ricin: Dictionary.com [home, info] ricin: Online Etymology Dictionary [home, info] ricin: UltraLingua English Dictionary [home, info] Ricin: Wikipedia, the Free Encyclopedia [home, info] ricin: Rhymezone [home, info] ricin: Free Dictionary [home, info] ricin: Mnemonic Dictionary [home, info] ricin: WordNet 1.7 Vocabulary Helper [home, info] ricin: LookWAYup Translating Dictionary/Thesaurus [home, info] ricin: Dictionary/thesaurus [home, info] Computing (1 matching dictionary) ricin: Encyclopedia [home, info] Medicine (5 matching dictionaries) Ricin: MedTerms.com Medical Dictionary [home, info] Ricin: Medical Dictionary [home, info] ricin: online medical dictionary [home, info] ricin: Medical dictionary [home, info] Ricin: Drug Medical Dictionary [home, info] Miscellaneous (1 matching dictionary) ricin: Glossary of Terrorism Terms [home, info] Science (1 matching dictionary) ricin-: Glossary of Roots of Botanical Names [home, info] Slang (1 matching dictionary) Ricin: Urban Dictionary [home, info]

Quick definitions from Macmillan ( ) Provided by Quick definitions from WordNet (ricin) ▸ noun:  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") ▸ Word origin