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Definition of: spectrometer
Our photo definition of spectrometer 
(spek·trom′ə·tər) noun
1. An instrument by means of which the angular deviation of a ray of light produced by a prism or by a refraction grating can be determined, or a wavelength of a ray of light can be accurately measured.
2. A spectroscope provided with such an instrument.
—spec·tro·met·ric (spek′trō·met′rik) adjective
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