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toxin: [noun] 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.
A toxin is a naturally occurring organic [dubious – discuss] poison produced by metabolic activities of living cells or organisms. They occur especially as proteins, often conjugated. The term was first used by organic chemist Ludwig Brieger (1849–1919) and is derived from the word "toxic".
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
Apr 1, 2018 · Toxin Definition. A toxin is a chemical substance which damages an organism. A toxin may be as simple as an ion or atom which negatively interferes with a cell. A toxin can also be in the form of complex molecules such as the proteins found in snake venom. Still other atoms and chemicals emit radiation, which has toxic effects on an organism.
Toxin definition: any poison produced by an organism, characterized by antigenicity in certain animals and high molecular weight, and including the bacterial toxins that are the causative agents of tetanus, diphtheria, etc., and such plant and animal toxins as ricin and snake venom.. See examples of TOXIN used in a sentence.
A poison that exists naturally in an insect or animal, and which is often introduced into the victim by biting or stinging, is known as a venom, while one in a plant is generally known as a toxin. Plant toxins range from those that simply bother the skin to those that cause pain or death when eaten.
Britannica Dictionary definition of TOXIN. [count] : a poisonous substance and especially one that is produced by a living thing. the toxin in scorpion venom. Scientists are studying how exposure to environmental toxins [=small amounts of poisons found in air, water, food, etc.] may affect our health.
