1
as in dense
impossible to get through or into
the wall of security people surrounding the rock band was impermeable
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2
as in tight
not allowing penetration (as by gas, liquid, or light)
an impermeable seal on the ancient tomb had preserved the artifacts exceptionally well
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Examples of impermeable in a Sentence
Recent Examples on the Web
This has partly been attributed to rapid urban development, which has created sprawl that encases floodplains in impermeable concrete.
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Christy Choi, CNN, 13 Aug. 2024
City officials are proposing a parcel tax of 7 cents per square foot of impermeable or paved-over property — far more than the 2.5 cents per square foot that Los Angeles County charges.
—David Garrick, San Diego Union-Tribune, 6 June 2024
The team then married this data with land-use data showing where in LA County there’s good tree cover, which reflects heat, and where there are impermeable surfaces like pavement, which absorb it.
—Matt Simon, WIRED, 9 May 2024
American cities like Los Angeles and Pittsburgh have been rolling out something similar: Taxes on the amount of impermeable area on a property, like concrete, that incentivize landowners to develop gardens and other green spaces instead.
—Matt Simon, WIRED, 22 Apr. 2024
See all Example Sentences for impermeable 
Christy Choi, CNN, 13 Aug. 2024
City officials are proposing a parcel tax of 7 cents per square foot of impermeable or paved-over property — far more than the 2.5 cents per square foot that Los Angeles County charges.
—David Garrick, San Diego Union-Tribune, 6 June 2024
The team then married this data with land-use data showing where in LA County there’s good tree cover, which reflects heat, and where there are impermeable surfaces like pavement, which absorb it.
—Matt Simon, WIRED, 9 May 2024
American cities like Los Angeles and Pittsburgh have been rolling out something similar: Taxes on the amount of impermeable area on a property, like concrete, that incentivize landowners to develop gardens and other green spaces instead.
—Matt Simon, WIRED, 22 Apr. 2024
See all Example Sentences for impermeable
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'impermeable.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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“Impermeable.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/impermeable. Accessed 31 Oct. 2024.
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