toxin

/'tɔksin/

Thân thiện

A scientist carefully labels a vial containing a toxin in the laboratory.

Definition

1. Noun:
   • A poisonous substance: A toxin is a poisonous substance, especially one produced by a living organism such as a bacterium, plant, or animal. It is capable of causing disease or harm when introduced into the body or absorbed by tissues.

Usage

• General Use: The word "toxin" is used to describe a specific type of poison that is biologically produced. It is a formal and scientific term.
• Contexts: Commonly used in biology, medicine, chemistry, environmental science, and discussions about health, diet, or poisoning.

Examples

• Noun:
  • The snake's venom contains a powerful neurotoxin.
  • Some mushrooms produce toxins that can be fatal if ingested.
  • The body's liver helps to filter and remove toxins from the blood.

Advanced Usage

• "Environmental toxins": Harmful chemical or biological agents present in the environment.
  • Public health campaigns aim to reduce exposure to environmental toxins like lead and mercury.
• "Endotoxin" vs. "Exotoxin": Specialized terms in microbiology. An endotoxin is a toxin that is part of the outer membrane of certain bacteria and is released when the bacterium disintegrates. An exotoxin is a toxin secreted by a living bacterium into its surroundings.
  • The severe symptoms of the infection were caused by a bacterial exotoxin.

Variants and Related Words

• Toxic (adj): Poisonous; relating to or caused by a toxin.
  • The spill created a toxic environment for local wildlife.
• Toxicity (n): The quality or degree of being poisonous.
  • Scientists measured the toxicity of the new compound.
• Toxinology (n): The scientific study of toxins, their effects, and antidotes.
• Detoxify (v): To remove or neutralize a poison or toxin.
  • The body works to detoxify harmful substances.

Synonyms

• Poison: A substance that can cause illness or death. (Note: "Poison" is a broader term; all toxins are poisons, but not all poisons are biologically produced toxins.)
• Venom: A toxin secreted by animals such as snakes or spiders, typically injected by a bite or sting.
• Toxicant: A technical term for a man-made or artificial poisonous substance.

Antonyms

• Antidote: A substance that counteracts a toxin or poison.
• Nutrient: A substance that provides nourishment essential for growth and life.

Related Phrases

• "Toxin buildup": The accumulation of harmful substances in the body.
  • Some diets claim to help with eliminating toxin buildup.
• "Natural toxin": A poison produced naturally by a plant, animal, or microorganism.
  • Even some healthy foods contain natural toxins in small amounts.

Học thuật

Noun

1. a poisonous substance produced during the metabolism and growth of certain microorganisms and some higher plant and animal species