Definition

1. Adjective:
   • Not allowing fluid to pass through: Describes a material, substance, or layer that prevents the passage of liquids or gases.
   • Impenetrable to a specific substance: Can describe a barrier that is resistant to the diffusion or penetration of a particular element.

Examples of Usage

• Adjective:
  • The basement walls were sealed with an impermeable membrane to prevent water damage.
  • This raincoat is made from an impermeable fabric, so you won't get wet.
  • The landfill has a thick, impermeable clay liner to contain contaminants.

Advanced Usage

• "impermeable to [something]": Used to specify what substance cannot pass through.
  • The container is impermeable to oxygen, keeping the food fresh for longer.
  • His arrogance made him impermeable to constructive criticism.

Variants and Related Words

• Impermeability (noun): The quality or state of being impermeable.
  • The impermeability of the material is crucial for its use in hazardous waste storage.
• Impermeably (adverb): In an impermeable manner.
  • The layers were fused impermeably together.

Synonyms

• Waterproof: Resistant to water.
• Nonporous: Having no pores; not allowing liquid or air to pass through.
• Sealed: Closed or secured so as to prevent passage.
• Airtight: Not allowing air to enter or escape.

Antonyms

• Permeable: Allowing liquids or gases to pass through.
• Porous: Full of tiny holes that allow fluids or air to pass through.
• Leaky: Having holes or cracks that permit leakage.

Adjective

1. preventing especially liquids to pass or diffuse through
   • impermeable stone
   • an impermeable layer of scum
   • a coat impermeable to rain