A layer of gravel, sand or other material through which liquid is passed in order to remove impurities.
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- (noun) A layer of gravel, sand or other material through which liquid is passed in order to remove impurities.
Meanings
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noun A layer of gravel, sand or other material through which liquid is passed in order to remove impurities.
Summary
A layer of gravel, sand or other material through which liquid is passed in order to remove impurities.
- (noun) A layer of gravel, sand or other material through which liquid is passed in order to remove impurities.
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