Impermeability is a noun that primarily refers to the quality or state of being impenetrable or resistant to the passage of substances, fluids, or other materials. It can be understood in various contexts:

Physical Impermeability: In physical sciences and engineering, impermeability (noun) describes the inability of a material or barrier to allow the passage of liquids, gases, or solutes. Impermeable materials are often used in construction, waterproofing, and containment applications to prevent leakage, seepage, or infiltration.

Engineers and designers may assess and test the impermeability (noun) of materials, coatings, membranes, or structures to ensure their effectiveness in preventing the ingress or egress of fluids or contaminants.

Chemical Impermeability: In chemistry and materials science, impermeability (noun) refers to the resistance of a substance or material to the diffusion or permeation of other substances, such as gases, liquids, or solutes. Impermeable barriers are important for protecting against chemical corrosion, degradation, or contamination.

Chemists and researchers may investigate the chemical impermeability (noun) of polymers, coatings, films, or coatings to assess their suitability for applications requiring resistance to chemical exposure or environmental degradation.

Biological Impermeability: In biology and physiology, impermeability (noun) describes the property of biological membranes or barriers that restrict the passage of substances or molecules. Impermeable membranes play essential roles in cellular compartmentalization, osmoregulation, and the maintenance of homeostasis.

Biologists and physiologists study the impermeability (noun) of cell membranes, epithelial tissues, and biological barriers to understand their structure, function, and role in physiological processes such as nutrient absorption, waste removal, and ion transport.

In summary, impermeability is a noun that describes the quality or state of being impenetrable or resistant to the passage of substances, fluids, or other materials. It has applications in physical sciences, engineering, chemistry, materials science, biology, physiology, and various other fields where impermeable barriers are essential for preventing leakage, contamination, or unwanted interactions.

IMPERMEABILITY in a sentence

  • The impermeability of the material makes it ideal for waterproof jackets.
  • The impermeability of the skin protects the body from harmful substances.
  • The impermeability of the membrane prevents water from passing through.
  • The engineer tested the impermeability of the concrete to ensure its durability.
  • The impermeability of the container keeps the contents safe from outside elements.
  • The impermeability of the fabric makes it suitable for use in outdoor tents.
  • The impermeability of the roof prevents water leaks during heavy rainfall.
  • The study focused on the impermeability of various materials to gas diffusion.


The term impermeability refers to the quality or state of being impervious to the passage or penetration of substances, such as liquids or gases. Delving into its etymology and usage unveils its significance in various fields, including engineering, geology, and material science.

  • Roots in Latin: “Impermeability” combines the prefix “im-” meaning “not” or “without,” and “permeability,” derived from the Latin “permeabilis,” which means “able to be passed through.”
  • Evolution of Meaning: Originally used to describe the inability of a substance to allow the passage of fluids or gases, impermeability has expanded to encompass broader concepts of resistance to infiltration or penetration in various contexts.

In conclusion, impermeability serves as a descriptor for materials, barriers, or substances that exhibit resistance to the passage or penetration of fluids or gases. Its etymology underscores its association with the idea of being impervious or resistant, while its usage highlights its role in engineering design, environmental protection, and material selection. Understanding the concept of impermeability is essential for designing structures, selecting materials, and implementing measures to control the flow of substances in different applications, from waterproofing buildings to preventing contamination of groundwater.


  • Imperviousness
  • Inaccessibility
  • Resistance
  • Unyieldingness
  • Watertightness
  • Impregnability
  • Incorruptibility
  • Unassailability


  • Permeability
  • Porosity
  • Penetrability
  • Susceptibility
  • Vulnerability
  • Openness
  • Accessible
  • Pore


  • Impenetrability
  • Unaffectedness
  • Invulnerability
  • Insulation
  • Shielding
  • Inviolability
  • Exclusion
  • Sealing

🌐 🇬🇧 IMPERMEABILITY in other languages

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