Permeable: meaning, definitions and examples

Used to describe materials or surfaces that allow liquids or gases to pass through them, often in a scientific or technical setting.

• This fabric is permeable to air, making it suitable for sportswear.
• The permeable membrane allows water to flow through but blocks larger particles.

Describes a material that has many small holes or spaces, allowing liquids or gases to pass through; often used in more general contexts than 'permeable'.

• This porous rock can absorb water quickly.
• The porous surface of the sponge makes it perfect for cleaning.

Typically used to describe something that can be entered or passed through, often referring to physical barriers or surfaces.

• The dense forest was barely penetrable by the hikers.
• The fortress remained impenetrable for years, but a secret tunnel made it penetrable.

Refers to a material or membrane that allows liquids or gases to pass through it. Often used in scientific or technical contexts.

• The soil in this region is permeable, which helps in irrigation.
• A permeable membrane is essential for the experiment.

Typically used to describe clothing or fabric that allows air to pass through, making it comfortable to wear and helping to regulate temperature.

• This jacket is made of breathable fabric, perfect for hiking.
• Running shoes should be breathable to keep your feet cool.

Describes a material that has minute openings or gaps, allowing fluids or gases to pass through. Commonly used in scientific, geological, or everyday contexts.

• The porous rock allowed water to seep through easily.
• Some ceramics are porous and can absorb moisture from the air.

Usually used to describe something that can be pierced or entered, often with a connotation of vulnerability or ease of entry. Can have a negative connotation.

• The fortress was nearly impenetrable, but they found a penetrable spot in the wall.
• The cybersecurity system was found to be penetrable, raising concerns.