impermeability
/ɪmˌpɜːrmiəˈbɪləti/
noun
- The quality of not allowing liquids or gases to pass through.
- Geologists study the impermeability of rock layers to predict groundwater flow.
- The impermeability of the plastic sheet kept the rain off the woodpile.
- The jacket's impermeability makes it perfect for hiking in wet weather.
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