Toxin | Description, Types, Sources | Britannica toxin, any substance poisonous to an organism The term is sometimes restricted to poisons spontaneously produced by living organisms (biotoxins) Besides the poisons produced by such microorganisms as bacteria, dinoflagellates, and algae, there are toxins from fungi (mycotoxins), higher plants (phytotoxins), and animals (zootoxins) The name phytotoxin may also refer to a substance, regardless
TOXIN Definition Meaning - Merriam-Webster The meaning of TOXIN is a poisonous substance that is a specific product of the metabolic activities of a living organism and is usually very unstable, notably toxic when introduced into the tissues, and typically capable of inducing antibody formation How to use toxin in a sentence Toxins Are Often Found in Nature