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Pronunciation varies by accent · noun
A device in a steam engine for forcing lubricating oil uniformly into the cylinder..
Use impermeator when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Impermeator means A device in a steam engine for forcing lubricating oil uniformly into the cylinder..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use impermeator where its definition matches the intended context.
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