Definition

1. Noun:
   • A device that removes impurities from water: A "water filter" is a physical device or system designed to clean water by trapping or neutralizing contaminants, sediments, chemicals, or microorganisms as the water passes through it.

Usage Examples

• Noun:
  • We installed a new water filter under the sink to improve the taste.
  • The hiker used a portable water filter to make stream water safe to drink.
  • It's important to change the cartridge in your water filter regularly.

Advanced Usage

• "To filter water" (verb phrase): The action of using a water filter.
  • Before camping, we learned how to properly filter water from a lake.

Variants and Related Words

• Water filtration (n): The process of removing impurities from water.
  • The city improved its water filtration system.
• Filter (n/v): The general device or the action of removing particles.
  • The coffee filter needs to be replaced. (n)
  • Filter the sauce to remove lumps. (v)
• Water purifier (n): A device that often includes filtration but may use additional methods (e.g., UV light, reverse osmosis) to clean water.
  • The water purifier removes both bacteria and viruses.

Synonyms

• Water purifier: A device for making water pure.
• Filtration system: A system designed for filtering.

Related Phrases

• Filter out (phrasal verb): To remove something unwanted.
  • This filter is designed to filter out lead and chlorine.
• Run water through a filter: To pass water through a filtering device.
  • You should run the tap water through a filter first.

Related Idioms

Noun

1. a filter to remove impurities from the water supply