Upper-Intermediate (B2)
IPA: /ˌpɜːrmɪəˈbɪləti/
KK: /pɜrˈmiːəˌbɪlɪti/
Definition
The ability of a material to allow liquids or gases to pass through it.
Example
The permeability of the soil affects how quickly water drains away.
Conversation

Have you ever heard about permeability in materials science?

Yeah, it's about how easily liquids or gases can flow through a substance, right?

Exactly! I was reading that it can really affect things like soil and water movement.

That makes sense — understanding permeability is important for engineering projects.
Synonyms & Antonyms
Synonyms
porosity
penetrability
diffusivity
Antonyms
impermeability
solidness
density
Root Explanation
Permeability → It is formed from "per-" (meaning through) and "meare" (from Latin "merere", meaning to pass or to measure). The word describes the quality of a material that allows substances to pass through it.
Memory Tip
Think of something that allows things to pass 'through' ('per-') — that's why permeability means the ability to let substances move through.
Visually Confused Words
impermeability
nonpermeability
operability
semipermeability
perceivability
fermentability
superability
prestability