permeability
permeability — noun
1. the degree to which a material lets water, air, or other fluids pass through its
the degree to which a material lets water, air, or other fluids pass through its surface or inner structure
The soil's high permeability meant the garden dried out after every rainstorm.
high + permeability collocation
Noor checked the fabric's permeability before buying it for her rain jacket.
permeability of fabric/material context
Low permeability in the clay layer kept the pond full all summer long.
Builders test the permeability of concrete to stop water from leaking inside.
Adding more sand increased the soil's permeability and helped the roots breathe.
- porosity
refers to the amount of empty space inside a material, not how connected those spaces are
- penetrability
emphasises being pierced or entered from the outside, less common in everyday use
- perviousness
a rare, formal synonym mostly found in older scientific writing
- impermeability
the quality of not letting any fluid pass through at all
- imperviousness
complete resistance to being penetrated by fluids
文法句型
permeability of + noun
high/low + permeability
用法筆記
Used mainly in scientific and technical fields such as geology, materials science, and biology. In everyday conversation, speakers are more likely to say 'how easily water passes through' or 'how porous something is.'