permeability

noun

per·​me·​abil·​i·​ty ˌpər-mē-ə-ˈbi-lə-tē 

1

: the quality or state of being permeable

2

: the property of a magnetizable substance that determines the degree in which it modifies the magnetic flux in the region occupied by it in a magnetic field

Examples of permeability in a Sentence

Recent Examples on the Web

With intentional permeability between the seals, the design doesn’t force a 14-year-old to make an irreversible commitment. —Matt Gandal, Forbes.com, 18 June 2026

The structure of micron-scale chambers restricts heat transfer while maintaining moisture permeability and quick-drying. —Alexandra Harrell, Footwear News, 7 May 2026

They are made of geotextile fabric, renowned for its water permeability. —Nan Sterman, San Diego Union-Tribune, 2 May 2026

The cell does this with a membrane permeable enough to let nutrients in but solid enough to hold the cell together, plus molecular controls to modulate that permeability as needed. —Amanda Gefter, Quanta Magazine, 10 Apr. 2026

Word History

First Known Use

1759, in the meaning defined at sense 1

Rhymes for permeability

• affability
• audibility
• bistability
• capability
• changeability
• contractility
• credibility
• culpability
• disability
• disutility
• durability
• fallibility

Kids Definition

permeability

noun

per·​me·​abil·​i·​ty ˌpər-mē-ə-ˈbil-ət-ē 

: the quality or state of being permeable

Medical Definition

permeability

noun

per·​me·​abil·​i·​ty ˌpər-mē-ə-ˈbil-ət-ē 

plural permeabilities

: the quality or state of being permeable