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Pronunciation varies by accent · noun
An instrument used to quantify the amount of electromagnetic wave ionospheric absorption in the atmosphere..
Use riometer when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Riometer means An instrument used to quantify the amount of electromagnetic wave ionospheric absorption in the atmosphere..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use riometer where its definition matches the intended context.
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