DEFINITIONS
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filter bed

noun

a pond or tank having a false bottom covered with sand and serving to filter river or pond waters.

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Words nearby filter bed

filosus, filovirus, fils, filt., filter, filter bed, filter bubble, filter cake, filter factor, filter feeder, filter feeding

Origin of filter bed

First recorded in 1870–75
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for filter bed

filter bed

noun

a layer of sand or gravel in a tank or reservoir through which a liquid is passed so as to purify itCompare bacteria bed
any layer of material through which a liquid is passed so as to filter it
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012