Dictionary![]() ![]() spec•tro•ra•di•om•e•terPronunciation: (spek"trō-rā"dē-om'i-tur), [key] —n. Optics. an instrument for determining the radiant-energy distribution in a spectrum, combining the functions of a spectroscope with those of a radiometer. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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