porosity

IPA/pɔːˈrɒsəti/
IPA/pɔːˈrɑːsəti/

porosity — noun

1. the degree to which a material contains tiny holes or spaces inside it, allowing

1.名詞B2
釋義

the degree to which a material contains tiny holes or spaces inside it, allowing liquids or gases to pass through slowly

例句

The high porosity of the sandstone allowed water to seep through quickly.

collocation: high porosity / low porosity

Roya tested the porosity of the clay before using it for her pottery project.

test the porosity of [material]

同義詞
  • permeability

    focuses on how easily fluids pass through, whereas porosity emphasises the void spaces themselves

  • absorbency

    describes the ability to take in liquid, which is related to but not the same as porosity

  • sponginess

    more informal; describes the physical feel of being soft and full of holes

反義詞
  • density

    a material with high density typically has low porosity

  • solidity

    the state of being solid and without internal spaces

文法句型

uncountable: Porosity [verb] ...

countable in technical contexts: ... porosities ...

用法筆記

Typically uncountable. In technical or comparative contexts, the plural form 'porosities' can refer to different degrees or types of porosity across materials.

常見錯誤

❌The porosity of this sponge is very porous.
✅The porosity of this sponge is very high.
💡'porous' is an adjective describing the material itself; use 'high' or 'low' to describe the degree of porosity.
❌This material has many porosities.
✅This material has high porosity.
💡In everyday use, 'porosity' is uncountable; the plural form is reserved for technical comparisons.