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Pronunciation varies by accent · noun
An instrument that measures the amount of black particulates in air or other gas.
BC and PM 2.5 were measured using real-time monitors, an aethalometer and a laser photometer.
Use aethalometer when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Aethalometer means An instrument that measures the amount of black particulates in air or other gas.
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
BC and PM 2.5 were measured using real-time monitors, an aethalometer and a laser photometer.
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