Found 2 items, similar to toxin.
English → English (WordNet) Definition: toxin toxin n : a poisonous substance produced during the metabolism and growth of certain microorganisms and some higher plant and animal species
English → English (gcide) Definition: Toxin Toxin \Tox"in\, Toxine \Tox"ine\, n. [Gr. toxiko`n. See Toxic. ] A poisonous product formed by an organism, such as a pathogenic bacterium, a plant or an animal, usually having a high molecular weight, often a protein or a polysaccharide, but occasionally a low-molecular weight agent such as tetrodotoxin.