Definition of porousnext
as in penetrable
capable of being passed into or through a cleaner that should not be used on porous surfaces

Synonyms & Similar Words

Relevance

Antonyms & Near Antonyms

Example Sentences

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.
Recent Examples of porous Scott Dochterman grades the pick Baltimore addressed its porous pass rush (30 sacks last year) by signing Trey Hendrickson this offseason. Matt Moret, New York Times, 25 Apr. 2026 The borders between them are always porous. Fintan O’Toole, The New York Review of Books, 25 Apr. 2026 The filter of peer review, meant to weed out subpar science, tends to be more porous with special issues. Anil Oza, STAT, 24 Apr. 2026 However, Steil explains that unglazed pots are porous while glazed pots aren’t. Lauren Landers, The Spruce, 23 Apr. 2026 See All Example Sentences for porous
Recent Examples of Synonyms for porous
Adjective
  • By breaking actives down into smaller molecules, the fermentation process makes the ingredient more bioavailable and penetrable.
    Jenny Berg, Vogue, 23 Sep. 2025
  • Bouncing back seven years after the barely penetrable Sunset, the Hungarian director’s new film takes its time to kick in but is a uniquely personal coming-of-age drama.
    David Rooney, HollywoodReporter, 28 Aug. 2025
Adjective
  • Replacing concrete in parking lots with more permeable materials, such as grass tiles, would also be beneficial.
    Adam Kovac, Scientific American, 22 Apr. 2026
  • The plastic wrap is permeable enough for air to get in.
    Lisa Cericola, Southern Living, 19 Apr. 2026

Browse Nearby Words

Cite this Entry

“Porous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/porous. Accessed 1 May. 2026.

More from Merriam-Webster on porous

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

More from Merriam-Webster