Toxin - Wikipedia
A toxin is a naturally occurring poison [1] produced by metabolic activities of living cells or organisms. [2] They occur especially as proteins, often conjugated. [3] The term was first used by organic chemist Ludwig Brieger (1849–1919), [4] derived from toxic.
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.
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 …
Toxin - Definition, Effects and Types | Biology Dictionary
2018年4月1日 · 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.
Toxin | definition of Toxin by Medical ... - Medical Dictionary
Usually only a few toxin-producing agents are introduced into the body, and it is not until there are enough of them to overwhelm the leukocytes and other types of antibodies that symptoms occur. In some cases of food poisoning, symptoms are almost immediate because the toxin is taken directly with the food.
TOXIN | definition in the Cambridge English Dictionary
TOXIN meaning: 1. a poisonous substance, especially one produced by bacteria, that causes disease 2. a poisonous…. Learn more.
Toxin Definition & Meaning | Britannica Dictionary
TOXIN meaning: a poisonous substance and especially one that is produced by a living thing
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