Breadcrumb Home > Thesaurus > R Synonyms of ricin Find synonyms for: Noun 1. ricin, ricin toxin, albumin, albumen, toxin usage: 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" WordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved.Definition and meaning of ricin (Dictionary) TrendingHere are the facts and trivia that people are buzzing about. Chinese New Year History, Meaning, and Celebrations Current Events This Week: February 2024 Valentine's Day Valentine's Day History Mardi Gras 30 "Charlie and the Chocolate Factory" Quotes ✖ Related Content Daily Word Quiz: pinguid Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language