per·me·able | \ˈpər-mē-ə-bəl \

Definition of permeable 

: capable of being permeated : penetrable especially : having pores or openings that permit liquids or gases to pass through a permeable membrane permeable limestone

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Examples of permeable in a Sentence

The cell has a permeable membrane. a permeable fabric that allows your body heat to escape will be much more comfortable in the summertime

Recent Examples on the Web

The protons flow through an electrolyte and a proton-permeable membrane to the cathode, while the electrons make the journey through a wire. Robert F. Service, Science | AAAS, "Ammonia—a renewable fuel made from sun, air, and water—could power the globe without carbon," 12 July 2018 Within the capsule, the bacteria sit in little compartments with only a heme-permeable membrane separating them from the outside. Beth Mole, Ars Technica, "This capsule of glowing E. coli will probe your gut for signs of trouble," 25 May 2018 For Alaedini, the beginnings of a mechanism emerged: Some still-unidentified wheat component prompts the intestinal lining to become more permeable. Kelly Servick, Science | AAAS, "What’s really behind ‘gluten sensitivity’?," 23 May 2018 The researchers packaged up these GLP-1-producing stem cells in a permeable capsule, then imbedded the capsule in the body cavities of mice that had diet-induced type 2 diabetes. Beth Mole, Ars Technica, "Scientists use caffeine to control genes—and treat diabetic mice with coffee," 20 June 2018 And the thing about medians is, LA has a few of them: The city can duplicate this project wherever the soils are permeable enough to accept water. Matt Simon, WIRED, "LA Is Doing Water Better Than Your City. Yes, That LA," 12 June 2018 The hard racial barrier between schools was now permeable. Will Stancil, The Atlantic, "The Radical Supreme Court Decision That America Forgot," 29 May 2018 Rhone said its commuter pants, made of a Japanese air-permeable stretch fabric, is the company’s top seller. Bloomberg, Fortune, "Now You Can Wear Sweatpants to Work and No One Will Know," 23 June 2018 The environmental upgrades will include new permeable pavers near the new station and a rain garden, which will be added south of a gazebo that is on the northwest corner of Arlington Heights’ municipal complex. Karen Ann Cullotta,, "New $28 million Arlington Heights police headquarters on track for completion even with wet spring," 22 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'permeable.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of permeable

15th century, in the meaning defined above

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Last Updated

3 Oct 2018

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The first known use of permeable was in the 15th century

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More Definitions for permeable



English Language Learners Definition of permeable

: allowing liquids or gases to pass through


per·me·able | \ˈpər-mē-ə-bəl \

Kids Definition of permeable

: having pores or openings that let liquids or gases pass through


per·me·able | \ˈpər-mē-ə-bəl \

Medical Definition of permeable 

: capable of being permeated especially : having pores or openings that permit liquids or gases to pass through a permeable membrane

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Comments on permeable

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a state of commotion or excitement

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