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