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Pronunciation varies by accent · noun
A form of water treatment in which water is pumped backwards through the filter media, sometimes with intermittent use of compressed air..
Use backwashing when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Backwashing means A form of water treatment in which water is pumped backwards through the filter media, sometimes with intermittent use of compressed air..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use backwashing where its definition matches the intended context.
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