Definition

1. Noun:
   • The act of changing a fluid by passing it through a filter: "Filtration" refers to the physical action or process of separating solid particles from a fluid (liquid or gas) by making it pass through a porous material (a filter).
   • The process whereby fluids pass through a filter or a filtering medium: This describes the overall mechanism or procedure by which a fluid is purified or clarified as it flows through a filtering substance.

Usage Examples

• Noun:
  • The filtration of the pond water removed most of the visible debris. (The process of passing the pond water through a filter removed most of the visible debris.)
  • Water purification often involves several stages, including filtration and chemical treatment. (Water purification often involves several stages, including the process of passing through a filter and chemical treatment.)

Advanced Usage

• "Gravity filtration": A process where the fluid flows through the filter under the force of gravity alone.
  • In the laboratory, gravity filtration is commonly used to separate a precipitate from a solution.
• "Vacuum filtration": A process where reduced pressure is applied beneath the filter to speed up the filtration.
  • Vacuum filtration is much faster than gravity filtration for collecting solid products.

Variants and Related Words

• Filter (verb/noun): The device used for filtration or the act of performing it.
  • You need to filter the coffee to remove the grounds. (verb)
  • The air filter in the car needs replacing. (noun)
• Filtrate (noun): The fluid that has passed through a filter.
  • The clear filtrate was collected in a beaker.
• Filterable (adjective): Capable of being removed by filtration.
  • The bacteria were not filterable through standard laboratory filters.

Synonyms

• Straining: The act of passing a liquid through a sieve or filter to separate solids.
• Percolation: The process of a liquid filtering gradually through a porous surface or substance.

Related Phrases

• "Filtration system": A setup or apparatus designed to carry out filtration.
  • The building's filtration system ensures the drinking water is clean.
• "Filtration rate": The speed at which a fluid passes through a filter.
  • The filtration rate decreased as the filter became clogged with particles.

Related Idioms

(Note: "Filtration" is a technical/scientific term and is not commonly used in idiomatic expressions. The related idioms typically involve the verb "filter.") - "Filter out": To remove something unwanted by using a filter, or metaphorically, to selectively exclude information or elements. - The software helps filter out spam emails. (phrasal verb) - Try to filter out the negative comments and focus on the constructive feedback. (phrasal verb)

Noun

1. the act of changing a fluid by passing it through a filter
2. the process whereby fluids pass through a filter or a filtering medium