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]

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 …

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 …

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 …

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.

Jul 14, 2025 · A toxin is a poisonous substance produced within living cells or organisms. These substances are distinct from toxicants, which are synthetic chemicals like pesticides.

Toxin: Directed by Jason Dudek. With Taylor Handley, Danny Glover, Vinnie Jones, Margo Harshman. A pharmaceutical company recruits a well-known scientist to help develop a vaccine against a deadly …

May 19, 2025 · Most toxins that cause problems in humans come from germs such as bacteria. For example, the symptoms of cholera are caused by a toxin made by cholera bacteria. Other toxins that …

Feb 3, 2025 · A toxin is any of a group of poisonous, usually unstable compounds generated by microorganisms, plants, or animals. Certain toxins are produced by specific pathogenic …

Definition of toxin noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.