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backwash
Definitions
[ˈbakwɒʃ], (Noun)
Definitions:
- the motion of receding waves
(e.g: the backwash is reduced in energy by the percolation of water into the shingle)
Phrases:
Origin
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[ˈbakwɒʃ], (Verb)
Definitions:
- clean (a filter) by reversing the flow of fluid through it
(e.g: the very fine mesh is backwashed to remove solids)
Phrases:
Origin
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definition by Oxford Dictionaries