Definition

1. Noun:
   • A substance that contaminates: A contaminant is a material, chemical, or biological agent that makes something impure, unclean, or unfit for use by introducing an unwanted element. It is the thing that causes contamination.

Examples of Usage

• Noun:
  • The water test revealed the presence of a dangerous chemical contaminant.
  • Industrial waste is a major environmental contaminant.
  • The laboratory must be kept free of any potential contaminants to ensure accurate results.

Advanced Usage

• "Emerging contaminant": A contaminant that has recently been discovered or recognized as a potential threat to the environment or human health, often due to new detection methods.

  • Pharmaceuticals in drinking water are now considered emerging contaminants.

• "Airborne contaminant": A contaminant that is suspended in and transported by the air.

  • Workers wore masks to protect themselves from airborne contaminants in the factory.

Variants and Related Words

• Contaminate (verb): To make something impure or unclean by contact or mixture with an unwanted substance.

  • The oil spill contaminated the coastline.

• Contamination (noun): The process or state of being contaminated.

  • The contamination of the river was caused by agricultural runoff.

Synonyms

• Pollutant: A substance that pollutes something, especially air or water.
• Impurity: A substance that makes something else less pure.
• Toxin: A poison produced by a living organism; often used when the contaminant is biologically derived and harmful.

Related Phrases

• "Trace contaminant": A contaminant present in very small, often barely detectable, amounts.

  • The analysis was sensitive enough to identify trace contaminants in the sample.

• "Point-source contaminant": A contaminant that enters the environment from a single, identifiable source, such as a pipe or a smokestack.

  • The factory was fined for being a point-source contaminant of the river.

Noun

1. a substance that contaminates