filter bed

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noun

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

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Origin of filter bed

First recorded in 1870–75

Words nearby filter bed

fils, filt., filter, filterable, filterable virus, filter bed, filter bubble, filter cake, filter factor, filter feeder, filter feeding

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use filter bed in a sentence

This valve is opened, and the watery portion is allowed to escape into a sand filter bed.
Scientific American Supplement, No. 447, July 26, 1884|Various
So that the last step of our artificial filtration is simply an imitation of nature's great filter-bed.
A Handbook of Health|Woods Hutchinson

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