filter bed

noun

Definition of filter bed

: a sand or gravel bed for filtering water or sewage

First Known Use of filter bed

1828, in the meaning defined above

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The first known use of filter bed was in 1828

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Cite this Entry

“Filter bed.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/filter%20bed. Accessed 24 Jan. 2021.

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