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/spɛkˈtɹɒm.ɪ.tə/ · noun
(analytical chemistry) An optical instrument for measuring the absorption of light by chemical substances; typically it will plot a graph of absorption versus wavelength or frequency, and the patterns produced are used to identify the substances present, and their internal structure..
Use spectrometer when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Spectrometer means (analytical chemistry) An optical instrument for measuring the absorption of light by chemical substances; typically it will plot a graph of absorption versus wavelength or frequency, and the patterns produced are used to identify the substances present, and their internal structure..
Common synonyms include mass spectrometer.
The opposite depends on the specific sense.
Use spectrometer where its definition matches the intended context.
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