porosity

noun

po·​ros·​i·​ty pə-ˈrä-sə-tē How to pronounce porosity (audio)
pȯ-
plural porosities
1
a
: the quality or state of being porous
b
: the ratio of the volume of interstices of a material to the volume of its mass
2
: pore

Examples of porosity in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
By replacing this flawed model with one that accurately accounts for SANS physics, the team demonstrated that porosity has a negligible effect on reactor physics or criticality safety. Aman Tripathi, Interesting Engineering, 1 Oct. 2025 Frizz can be a factor depending on the porosity. Talia Gutierrez, Glamour, 30 Sep. 2025 James agrees that the choice comes down to hair goals and porosity. Jailynn Taylor, Allure, 1 Sep. 2025 So the authors created a digital shuttlecock model based on the commercially available Li-Ning D8 feather shuttlecock, treating it as a smooth and rigid object but ignoring surface roughness and feather porosity as variables. Jennifer Ouellette, ArsTechnica, 19 Aug. 2025 See All Example Sentences for porosity

Word History

First Known Use

14th century, in the meaning defined at sense 1a

Time Traveler
The first known use of porosity was in the 14th century

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Cite this Entry

“Porosity.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/porosity. Accessed 10 Oct. 2025.

Kids Definition

porosity

noun
po·​ros·​i·​ty pə-ˈräs-ət-ē How to pronounce porosity (audio)
pōr-ˈäs-,
pȯ-ˈräs-
plural porosities
: the quality or state of being porous

Medical Definition

porosity

noun
po·​ros·​i·​ty pə-ˈräs-ət-ē, pō-, pȯ- How to pronounce porosity (audio)
plural porosities
1
a
: the quality or state of being porous
b
: the ratio of the volume of interstices of a material to the volume of its mass
2
: pore

More from Merriam-Webster on porosity

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