Entry from British & World English dictionary
(Of a substance) not allowing liquid or air to pass through it; not porous.
- This layer is non-porous, generally wet and cold, and a poor soil for root growth.
- This is a plus since the glaze makes them non-porous, requiring less water during hot weather.
- This marker is permanent on porous and non-porous surfaces and will write on just about anything.
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