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photometer [photometers]▼◼◼◼(measuring instrument)noun[UK: fəʊ.ˈtɒ.mɪ.tə(r)] [US: foʊ.ˈtɒ.mɪ.tə(r)]
spectrophotometer [spectrophotometers]▼◼◼◼(instrument used to measure the intensity of electromagnetic radiation at different wavelengths)noun[UK: spˌektrəfəʊtˈəʊmɪtə] [US: spˌektrəfoʊtˈoʊmɪɾɚ]
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